+1  A: 

Are you looking for more because JSEclipse is a good plug-in.

If looking for more then SourceForge has some you can check out.

TStamper
A: 

JSEclipse is (to my knowledge) the premiere and near-only JavaScript editor for Eclipse, but it is not free, which some people might take offense to. Also troublesome is that the forum link provided on its site appears to now be defunct: A sign, perhaps, of a dying community?

ehdv
+1  A: 

The JavaScript support that's intrinsic in the Aptana Studio plugin is quite good, though not without issues.

It's free and certainly worth a try.

David Citron