Here's a small demo on how I've been using Chrome's "live editing" features to speed up my development workflow. Chrome let's you modify currently loaded files on the fly - so you can tweak settings and test code in real time.
Don't forget to keep an eye on the development of my up-and-coming waterski odyssey: WaterSki or Die! (coming to a phone near you soon, with programmer art removed).
Awesome. I had no idea about this. Reminds me of Bret Victor’s Ladder of Abstraction http://worrydream.com/#!/LadderOfAbstraction