JSEclipse is the the best and most popular Javascript plugin for the Eclipse environment. Its benefits are visible from the simplest tasks like editing small sections of code for your site to the more complex ones like working with the next big AJAX library or developing plugins for a product that embeds JavaScript like Dreamweaver or Photoshop.
Highlights in version 1.5:
* Revamped code completion for JavaScript function and classes.
* Common idioms used in JavaScript.
* All dojo, prototype.js and script.aculo.us class extending idioms are now recognized
* Full YAHOO framework support
* Outline panel shows class hierarchy.
* Syntax highlighting.
* Powerful editing assistance helpers.
* Support for JDK 1.4
* Code completion for JSDoc and inline parameter type definition.
* Open function declaration.
* Error reporting... and more
