Probably quite well, once you realise how "misunderstood" js is: http://javascript.crockford.com/javascript.html http://javascript.crockford.com/javascript.html

Probably quite well, once you realise how "misunderstood" js is: http://javascript.crockford.com/javascript.html http://javascript.crockford.com/javascript.html Also, they probably use drawing on a <canvas /> element for the main UI, so it won't be limited to html/dom.