[ejs]

I think JSLint can be a big help, especially with semicolons so I made a quick jQuery plugin to run things through it on page load. So I know exactly when something may be wrong.

http://github.com/ejschmitt/AutoLint

[sprsquish]

I'm using the Javascript Tools bundle for TextMate. It runs JSLint every time I save a javascript file.

http://github.com/subtleGradient/javascript-tools.tmbundle