and specifically game development.
So initially I wanted to make a board game (backgammon) with the help of some HTML5 (with game features) library.
Here are some libraries out there with game dev features:
Finally - and after wasting some time researching / building with some libraries - I decided LimeJs would be the one.
LimeJS is a HTML5 game framework based on Closure Library by Google and extends Closure Library by adding many classes useful for game development like: Animation, audio, director (which is the base), scene (inside director), layer (inside a scene), sprite etc. For rendering DOM, canvas and WebGL are supported (latter has been added recently).
The HTML5 framework is compatible with all the major browsers and also supports touch events by touch devices. More in their site with: documentation, demos and a very good guide.
I also then decided to start with something simpler, as a game / test / experiment: Puzzler, a variation of jigsaw puzzle which I had made some time ago as a windows game (see Old games)
So here it is Puzzler in HTML5: Click to play
And here is the source code at GitHub.