Use this:
In Eclipse, Install New Software to http://svn.codespot.com/a/eclipselabs.org/mobile-web-development-with-phonegap/tags/r1.2/download
I used jslint4java to add jslint to the Eclipse plugin for Android PhoneGap development. If you’re not interested in PhoneGap or Android, you can choose only the jslint4java feature in the install wizard
Usage information here.