JSLint
From Technical Presentations
JSLint is JavaScript code analyzer by Douglas Crockford. This is very useful tool for understanding potential problems within your JavaScript code.
You'll be fascinated to learn how bad your code is first time you use JSLint.
[edit] Links
- http://www.jslint.com/ - homepage and real-time JSLint right on web page (JavaScript implementation)
- Documentation including links to WSH and Rhino command line implementations (useful for automated test process)
[edit] Warning!
JSLint will hurt your feelings.

