Javascript major mode in Emacs

Question

Which javascript major modes exist in Emacs, and what are their key-features ?

Answer 1

I think what you want is this:

http://www.corybennett.org/download/javascript-mode.el

Then again, maybe this what you are looking for?

or this?

Answer 2

http://steve-yegge.blogspot.com/2008/03/js2-mode-new-javascript-mode-for-emacs.html

With some documentation.

Answer 3

I use Steve Yegge's js2-mode, and like it a lot. It's quite configurable, its indentation ideas match mine, and most impressively it has a full JavaScript parser in it, so it can alert me to syntax errors as I type (indispensable for little things like trailing commas in property lists that bork IE).

Answer 4

Espresso mode is supposed to be quite good as well.