Can I use the html5 doctype with RDFa?

Question

The following question was asked on public-rdfa mailing list:

Is it possible to use html5 doctype with rdfa being able to use xhtml style syntax and staying in strict mode?

Answer 1

The answer is yes. I'm copying the answer I gave on public-rdfa mailing-list so it will be accessible for others in the future here.

Strict Mode

<!DOCTYPE html>

will put your browser into strict mode.

Proposed syntax for adding RDFa

Be careful it is still a working draft at the time of this writing: RDFa in HTML

<!DOCTYPE html>
<html version="HTML+RDFa 1.1" lang="en">
  <head>
    <title>Example Document</title>
  </head>
  <body>
    <p>Moved to <a href="http://example.org/">example.org</a>.</p>
  </body>
</html>

Syntax Style (aka pseudo-xhtml)

You can write mostly with xhtml syntax style without issues. But be aware that your document will not be necessary xhtml mime-type ready. So basically, you can in html5

close your elements ex: <br/>
quote your attributes values ex: <span title="html5 is flexible">html5<span>

There is a document, HTML Polyglot, explaining the syntax if you want to serve documents using both text/html and application/xhtml+xml Be careful it is a working draft

Can I use the html5 doctype with RDFa?

Strict Mode

Proposed syntax for adding RDFa

Syntax Style (aka pseudo-xhtml)

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