What is the best javascript editor add-in you ever used

At recent times, I frequently edited .js files through VS, but it awkward. Could you suggest some excellent add-ins to facili开发者_如何学Goate the work?

Thanks.

We are using E-text editor it is not free though.
Here is excerpt from docs.

E is a new text editor for Windows, with powerful editing features and quite a few unique abilities. It makes manipulating text fast and easy, and lets you focus on your writing by automating all the manual work. You can extend it in any language, and by supporting TextMate bundles, it allows you to tap into a huge and active community