How to write JavaScript in Eclipse

I am using eclipse for java coding开发者_如何学JAVA. Can I use JavaScript in eclipse? If yes, How to use it? Please give ideas.

I use the excellent Aptana studio eclipse plugin.

If you want to edit Javascript within Eclipse, just install the WTP (Web Tools Project), there is one in there. Edit: You cannot execute Javascript from within Eclipse, but you can use, for example, Firefox with Venkman or Firebug to run the actual file in a browser.