Well while going ahead with my NodeJS study and after looking at the functionality that NodeJS provides, I got a little curious to search for something which might help me develop in JS a little more easily. To my surprise, I found a lot of languages which does that, but I picked 3 as it seemed these are got some history to themselves and backed by big corporate or have a huge community to support.
1. CoffeeScript
2. TypeScript
3. Dart
All these three compile to javascript. While CoffeeScript and TypeScript are nodeJS dependent and installed by “npm”, Dart comes with its own installation and IDE. Personally I liked the first two, at first glance as they are installed with “npm”. But then Dart comes with its own IDE, which is an advantage.
Now a little bit about the face value of the three.
CoffeeScript : A huge community and has proven history of a good player.
TypeScript : Its a microsoft initiative.
Dart : Its a Google initiative.

Looking at all these, I still feel HAXE is the best for JS dev too, may be thats my biased opinion.