My sibling comments (at time of post) point out Chrome/Firefox dev tools and jshint.. Which I also use every day integrated into the same development flow. Perh

My sibling comments (at time of post) point out Chrome/Firefox dev tools and jshint.. Which I also use every day integrated into the same development flow. Perhaps the question is better posed as "What IDE is so great for Javascript?" FWIW I use VS2012 for Javascript development daily. I also add in ReSharper, the wonderful Web Essentials extension (http://vswebessentials.com/ http://vswebessentials.com/) and a few other extensions I adore ('Productivity Power Tools 2012' and 'Highlight all occurrences of a selected word'). I find the result to be exceptionally good.