The Javascript interpreter is becoming blazing fast because of the Second Browser War. The next step is to abstract away from Javascript through either libraries (jQuery, ExtJS, SproutCore) or develop new languages on top of it (CoffeeScript, Objective-J).
— From Derek Hammer’s post, <a href="http://www.derekhammer.com/2011/09/11/the-platform-race.html">The Platform Race</a>