Emacs, HTML5 not validating

Question

I'm Writing a JQuery Mobile / PhoneGap app using Emacs 23.3. I'm using nXhtml, but for example, HTML5 data attributes are not validated. I'd like to use completion as well.

What's the recommended mode to use?

Does anyone actually use Emacs to edit HTML5, specifically JQuery Mobile pages?

Answer 1

I use js3-mode, flymake-jshint, zencoding-mode, flymake-css, rainbow-mode in emacs for html5.