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  • Slide 1
  • Authoring Web Sites in XHTML Darlene Fichter University of Saskatchewan Library Canada Internet Librarian International 26 March, 2003 Birmingham, UK
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  • Overview Frameworks Portlets Why use XHTML? XHTML syntax How XHTML differs from HTML XHTML and CSS XHTML tools
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  • Yesterday
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  • Today
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  • Computer - Device
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  • Static HTML hand coding HTML Tag Editors HTML, Forms, Client Side Scripts WSIWYG & Management Tools Distributed Authoring Dynamic / Database SQL & Perl/PHP/ASP Portals & Personalization My Library Objects - XML Portals & Portlets Web Services XML, SOAP Web Page Web Site Web Services CMS Authoring & workflow
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  • Content Challenges in 2003: Document Collections Storage & Management Content Structure Work Ease of use Ease of creation Good retrieval
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  • Service Challenges Just in Time Repackaging Over the Long Term Preservation Migration
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  • HTML Simple, general-purpose document markup language Simple hyperlinking Designed for collaborative authoring Combined authoring and viewing roles
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  • HTML Strengths Open standard Lots of tools and applications Easy and cheap Rapidly adopted
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  • HTML Weaknesses Not extensible Supports only simple document types Mixes presentation and structure Cross-browser wars
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  • XML More meaningful searches Flexible web applications data from disparate sources/applications client processing multiple views granular updates Open standard Unicode Hope --> good for web delivery
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  • What is XHTML? Called Next generation HTML HTML that conforms to XML standards Will eventually support integration with other XML applications Device independent web access
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  • Why use XHTML? Most documents on the Internet are in HTML this is the logical next step Simpler than XML for most authors XHTML documents are XML compliant, which allows you to use XML tools such as XSL Future -- XHTML easier than HTML with the next generation of browsers
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  • Why do We Need XHTML? Both HTML and SGML have major drawbacks. XMLs use for encoding web documents is still at early stages of adoption
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  • Benefits of Adoption Easier to develop software handle specialized information distributed over the Web Process data using inexpensive software Allows greater end-user control of information display stylesheets Metadata for resource discovery
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  • XHTML - What does it take? All documents must have a doctype declaration The transitional doctype declaration-- Head and body Syntax
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  • XHTML 3 Variations Strict Used when CSS is used for all your formatting Transitional Frameset
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  • Syntax: Lower case Case matters HTML: or or XHTML:
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  • Syntax: Attributes Attributes must be quoted HTML XHTML
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  • Syntax: Close Elements All tags must be closed HTML: Le chien dort. La chat joue. XHTML: Le chien dort. La chat joue.
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  • Syntax: Empty Elements Empty elements must be terminated HTML: XHTML:
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  • Elements Must Be Nested
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