javascript - Is HTML 5 supported by all the main browsers?

Question

I am looking at the custom attributes feature of html 5 here at this link http://ejohn.org/blog/html-5-data-attributes/

This look like the perfect thing for when I am using jquery/javascript.

My question, Is HTML 5 supported by all the main browsers?

example

<li class="user" data-name="John Resig" data-city="Boston"
     data-lang="js" data-food="Bacon">
  <b>John says:</b> <span>Hello, how are you?</span>
</li>

Answer 1

Various portions of HTML5 are supported by the different browsers, for various definitions of 'supported'.

Several parts work right now, reliably. The data-* attributes you ask about in your question work just fine in every browser, even IE6; however, nobody yet supports the fun "dataset" method to access them. As long as you're fine with just grabbing them by the full attr name, you're golden. I use them to store state all the time in my webapps, as they're the officially blessed method for doing so.

Wikipedia has a good summary of the various support levels across browsers: http://en.wikipedia.org/wiki/Comparison_of_layout_engines_(HTML_5)