JSLint is now available as a Konfabulator widget. Drop a .js file on
it, and it will tell you about its coding weaknesses. JSLint is an
essential tool for quality programming in JavaScript.
You can get it here: http://www.widgetgallery.com/view.php?widget=37484
But first install Konfabulator, which you can get here:
http://konfabulator.com/
You can read more about JSLint at:
http://www.crockford.com/javascript/lint.html You can use it most
effectively if you understand its design expectations. If you don't
understand what it is trying to do, it can hurt your feelings.
And the copy/paste version is still available at: http://www.JSLint.com
It is all free.
Remember: If you aren't using JSLint, there is something seriously
wrong with you...and your code.