Coding JavaScript with Updates Appearing as You Type (jsbin.tumblr.com)

jsBin (and its competitor jsFiddle) allow you to view the result of your JavaScript very quickly, effectively and easily. They are coding game-changers.

In the latest beta, jsBin allows you to view changes in your coding with real-time output.

Compare and contrast this modern way of coding with, say, compiling an ActionScript routine. with jsBin you are seeing updates before Visual Studio has even finished loading.

And, btw, jsBin works on my color Nook...