debugging tips in yui 3

YUICONF 2009

Luke Smith

Debugging in YUI 3

yuilibrary lsmith

github lsmith

twitter ls_n

Tuesday January 18 2011

YUICONF 2009

Debugging is all about challenging your own assumptions At least one of them was obviously wrongrdquo

-- some bald guy

ldquo


YUICONF 2009

Web development is hard


YUICONF 2009

This is what were up against


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags

CSSCascadeSpecificity

Stacking context

Box model


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model

JavaScriptFunction scoping

Late bindingthis


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity

BrowserImplementations

Security policy

Bugs


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs

LibraryInconsistent API

Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem

(understand the problem space)


YUICONF 2009

Itrsquos the nature of a library to change the playing field

JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try

Consistent API Much improved

Interoperability Still great

Documentation Good but can improve

Bugs Where


YUICONF 2009

What we have to work with


YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009

MS Visual Web DeveloperExpress Edition


YUICONF 2009



YUICONF 2009

IE Developer Toolbar


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools

MS Vis Web Dev + Dev Toolbar



YUICONF 2009


YUICONF 2009

Inspector

Problem [something] isnt showing up


YUICONF 2009

Inspector


Step 1 Verify its in the DOM


YUICONF 2009

Inspector



Step 2 Hover the element for highlight


YUICONF 2009

Inspector




Step 3 Check for missingoverridden styles


YUICONF 2009

Inspector





Step 4 Check the CSS of its ancestors


YUICONF 2009

Inspector






Step 5 Disable styles position zoom


YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009

Ylog( msg category source )

if (this_isImageLoading(img))

Ylog(ldquoThumb image loadingrdquo info slider)

Schedule the sync for when the image loadserrors this_scheduleSync() else

Ylog(ldquoNo thumb image or image already loaded ldquo + ldquoSyncing immediatelyrdquo info slider)

this_ready(imgthis_isImageLoaded(img))


YUICONF 2009

YConsole

new YConsole()render()


YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009

YPluginConsoleFilters

new YConsole() plug(YPluginConsoleFilters) render()


YUICONF 2009

Configure YUI for debuggingYUI( debug true filter lsquodebug|rawrsquo filters module lsquomin|raw|debugrsquo logInclude source true logExclude source true )


YUICONF 2009

YUI( debug true filter lsquodebug|rawrsquo filters module lsquomin|raw|debugrsquo logInclude source true logExclude source true )


YUICONF 2009

YUI( filter lsquorawrsquo filters attribute lsquodebugrsquo )


YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009

Trailing commas break IE

ldquoExpected identifier string or numberrdquo


YUICONF 2009




YUICONF 2009

var obj = foo ldquoFoordquo bar ldquoBarrdquo

Culprit

Tip Trailing commas break IE



YUICONF 2009

Wait for DOMReady

ldquoOperation abortedrdquo


YUICONF 2009


Yon(domready function () )

Yon(contentready initFn wrapper)

Yon(available initFn el)

Yon(load function () window)

Yone(body)prepend( newContent )


YUICONF 2009

Problem Wheres my data

var data

Yio(url on success function (id o) data = oresponseText )

displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data

Expectation = breakpoint

Console or Net for XHR inspection


YUICONF 2009

Problem X is not a function

YUI(config)use(io-base function (Y)

function displayData(stuff) content = stuff || BOOM Yone(x)setContent( content )

var data

Yio(url onsuccess callback )

displayData(data)


YUICONF 2009

X is not a function

Object does not support this property or method

TypeError Result of expression Yone [undefined] is not a

function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation

Dependency Configurator


YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009

Problem Selector not working

YUI(config)use(node function (Y)

Yone(divcontains(YUI)) addClass(where-u-at)


YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null

Cross browser failure


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009



Yall(divcontains(YUI)) addClass(where-u-at)


YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yall returns empty NodeList



YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Step 1 break the chain


YUICONF 2009

Missing module


Step 2 expectation = breakpoint


YUICONF 2009

Missing module



Step 3 nodeListsize()


YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009

X is not a functionand

Missing module

Break on all errors


Documentation

Community


YUICONF 2009

Problem Cant access Y


implementation

)

Y is not visible here


YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y

Step 1 Assign Y to a local variable


YUICONF 2009

Cant access Y


Step 2 Combo url = synchronous


YUICONF 2009

Cant access Y



Step 3 Undo step 1 and 2


YUICONF 2009

Cant access Y


YUICONF 2009


var Y = YUI()use(node function (Y)

implementation

)

Y IS visible here


YUICONF 2009

var node = Yone(myform button)

var nodeList = Yall(myform button)

Problem I want the DOM node


YUICONF 2009

domNode = node_node

domNodes = nodeList_nodes

YNodegetDOMNode( node )

YNodeListgetDOMNodes( nodeList )



YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Check the Forum archives

Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009

Donrsquot be afraid to RTFS


YUICONF 2009

JSLint

Markup validation

YTest

Preventative measures


YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits

httpappraisalnewsonlinetypepadcomappraisal_news_for_real_eoffice_managementhttpwwwflickrcomphotoscibergaita62123585httpwwwbergoiataorgfedivers1610htm


YUICONF 2009

Debugging is all about challenging your own assumptions At least one of them was obviously wrongrdquo

-- some bald guy

ldquo


YUICONF 2009



YUICONF 2009



YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009



YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


HTMLTag soup

Quirks mode

Unsupported tags


Stacking context

Box model


Late bindingthis

DOMReflows

Event system

Asynchronicity


Security policy

Bugs


Version nuances

Bugs


YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Environment

Complexity

Inconsistency

Bugs


YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

The actual problem



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


JS

DOM

HTMLCSS

Browser

Requiredknowledge


YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


Requiredknowledge

JS

DOM

HTML

CSSBrowser Library


YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

We try




Bugs Where


YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


Inspectors


YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


Inspectors

Console


YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


Inspectors

Console

Debuggers


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


Inspectors

Console

Debuggers

Community


YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector


YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Console


YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Console


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Debugger


YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Debugger


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

FireBug


YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

FireBug


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Web Inspector


YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Web Inspector


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Dragonfly


YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Dragonfly


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

IE Developer Tools


YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

IE Developer Tools


YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

IE6 and (true) IE7


YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools


YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Firefox

Safari

Opera

IE8

IE7

IE6

Developer tools

FireBug

Web Inspector

Dragonfly

Developer Tools




YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector




YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector





YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector






YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector







YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector








YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector







Step 6 Reduce


YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector


display none

visibility hidden

overflow hidden

z-index x

position relative


YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspector



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspectors

- Console

- Debuggers

- Community


YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

console

NO YESalert()

consolelog()

Ylog()


YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

console

NO YES

Ylog()alert()

consolelog()


YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009








YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

YConsole



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

YConsole

Ylog()

Cross browser

Configurable

Extendable

Pluggable


YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009




YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Inspectors

Console

- Debuggers

- Community


YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Low hanging fruit


YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009




YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009




YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


Culprit




YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Wait for DOMReady



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009








YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Wheres my data

var data


displayData(data)


YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Wheres my data

var data


displayData(data)

1

2

3

4


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Wheres my data


YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Wheres my data




YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009




var data


displayData(data)


YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

X is not a function



function


YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

X is not a function


YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

X is not a function

Break on all errors


YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

X is not a function

Break on all errors

Documentation


YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

X is not a function

Break on all errors

Documentation



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

X is not a function

FireBug

Web Inspector


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

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YUICONF 2009


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Documentation

Community


YUICONF 2009



implementation

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YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

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YUICONF 2009

Cant access Y




YUICONF 2009

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YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

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YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

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YUICONF 2009

Cant access Y


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implementation

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Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

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Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module

Symptoms

Run time errors

Yone returns null


Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009





YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009




selector-css3


YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module


YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module

Symptoms


YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

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Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

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yui3

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YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module

Symptoms

Run time errors




YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

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yui3

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YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects


YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

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YUICONF 2009

Cant access Y


YUICONF 2009



implementation

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YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module

Symptoms

Run time errors



Usual suspects

selector-css3

event-mouseenter

event-focus


YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

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YUICONF 2009

Cant access Y


YUICONF 2009



implementation

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YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module


YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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YUICONF 2009



implementation

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YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

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yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

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Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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YUICONF 2009



implementation

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YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

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stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module




YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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YUICONF 2009



implementation

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YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module





YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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implementation

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YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

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yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module


YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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YUICONF 2009



implementation

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YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Missing module


YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

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YUICONF 2009

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YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009


Missing module

Break on all errors


Documentation

Community


YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

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yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



implementation

)



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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YUICONF 2009

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implementation

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YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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yui


YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

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YUICONF 2009

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implementation

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YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

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yui3

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YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Cant access Y


YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

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YUICONF 2009

Cant access Y


YUICONF 2009



implementation

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Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

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yui3

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YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Cant access Y



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


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implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

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yui3

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YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Cant access Y




YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

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Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Cant access Y





YUICONF 2009

Cant access Y


YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

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yui


YUICONF 2009

Community

Help us help you

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yui3

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yui


YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Cant access Y


YUICONF 2009



implementation

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Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

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yui


YUICONF 2009

Community

Help us help you

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yui3

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yui


YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



implementation

)

Y IS visible here


YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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yui


YUICONF 2009

Community


Reduce

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YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009





YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

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yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

domNode = node_node






YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

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yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Community

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Community

Help us help you

ydn-javascript

yui3

yuilibrarycomforum

stackoverflowcom

yui


YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Community


Reduce

gist


YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

httpgistgithubcom


YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

JSLint

Markup validation

YTest



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Final note


YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Final note

ADD TESTS


YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Oh and remember


YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Oh and remember

Its your fault


YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Oh and remember

Its your fault

And add tests


YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Oh and remember

Its your fault

And add tests

Seriously


YUICONF 2009

Image credits



YUICONF 2009

Image credits



debugging tips in yui 3

Technology

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web inspectortuesday

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developer toolbartuesday

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