Is there an application development framework for HTML5? Not the generic CSS and Javascript version where you build your own app, rather some kinda framework like Flex where everything gets embedded into the Canvas and javascripts gets cretade as you build your software.
How about Adobe Edge Preview version? It is free and you can have a basic tutorial from this link:
<http://www.adobe.com/newsletters/inspire/november2011/articles/article2/index.html?trackin gid=JLRCV>
Good luck and let us know if it helped.