I’ve been working with LimeJS, developing a sample game using this HTML 5/JavaScript framework.  LimeJS is a free framework that renders games in the DOM, using the HTML 5 canvas, or even using WebGL.  The game I was building is a letter-based game.  The game was a simple shell (without too much styling) and is still being developed.  You can read more about it from my series here:

This series is still being developed and will be added to over time.