I\'ve recently fallen in love in WebStorm as an IDE for JavaScript development. The problem is, I come from a world of vim and lightweight editors, so I probably can\'t fully ap
Features I find most useful:
Code formatting. WebStorm's formatter is the best I've seen (of course, it still has some subtle bugs).
Built-in HTTP server: http://blog.jetbrains.com/webstorm/2013/03/built-in-server-in-webstorm-6/, How to open/debug current file using built-in Web server in WebStorm?
JsTestDriver integration.
Plugins. You can always find something useful.