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HTML Data Guide

HTML Data Guide. W3C Interest Group Note 08 March 2012 OC Working Group – 09.07.2012 by Alex Oberhauser. Motivation. Syntaxes for data embedding in HTML. Microformat – Example ( hCard and geo). <ul class ="vcard "> < li class ="fn">Joe Doe</li >

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HTML Data Guide

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  1. HTML Data Guide W3C Interest Group Note 08 March 2012 OC Working Group – 09.07.2012 by Alex Oberhauser

  2. Motivation

  3. Syntaxes for data embedding in HTML

  4. Microformat – Example (hCard and geo) <ul class="vcard"> <li class="fn">Joe Doe</li> <li class="org">The Example Company</li> <li class="tel">604-555-1234</li> <li><a class="url"ref="http://example.com/">http://example.com/</a></li> </ul> <span class="geo"> <span class="latitude">52.48</span> <span class="longitude">-1.89</span> </span>

  5. RDFa – Example (DublinCore) <div xmlns:dc="http://purl.org/dc/elements/1.1/" about="http://www.example.com/books/wikinomics"> <span property="dc:title">Wikinomics</span> <span property="dc:creator">Don Tapscott</span> <span property="dc:date">2006-10-01</span> </div>

  6. Microdata – Example (schema.org) <div itemscopeitemtype="http://schema.org/Person"> <span itemprop="name">Jane Doe</span> <img src="janedoe.jpg" itemprop="image" /> <span itemprop="jobTitle">Professor</span> <div itemprop="address" itemscopeitemtype="http://schema.org/PostalAddress">    <span itemprop="streetAddress">20341 Whitworth Institute</span>    <span itemprop="addressLocality">Seattle</span>    <span itemprop="addressRegion">WA</span>    <span itemprop="postalCode">98052</span>  </div>

  7. What do use? What is recommended? • Possible to use all three syntaxes on one page (for one item) • For SEO Microdatais recommended • For easy extraction to RDF use RDFa • Microformatand Microdata can be mapped to the same JSON data model (see http://dev.w3.org/html5/md/Overview.html#json)

  8. Personal Recommendation • Microdatafor search engine optimization (relative easy to use) • If RDF is needed provide a (REST) API • Justification: RDFa is not easier than plain RDF, but RDF/(XML/N3/N-Triple) is easier parsable.

  9. Questions?

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