JavaScript Debugger

Question

Does anyone know of a really good editor to debug JavaScript (other then Visual Studio 2008 and FireBug)?

Answer 1

IE8 beta 2 has a nice debugger

Answer 2

Take a look at Venkman, the JavaScript debugger for Firefox:

http://www.mozilla.org/projects/venkman/

It's a real source-level javascript debugger where you can set breakpoints and step through code.

Answer 3

Opera has Dragonfly, though I still prefer Firebug. Before Firebug there was Venkman, though it's future is uncertain at this point.

Answer 4

Here is an article, Advanced JavaScript Debugging Techniques, that describes the use of several tools. One new tool I learned about that I hadn't heard of before is JSLint. Sometimes JSLint just immediately shows you your dodgy code that is causing the issue.

Answer 5

The Google chrome browser has a reasonable wee JS debugger built-in. There's a good list of the available commands here.

Answer 6

Aptana Studio IDE has a nice javascript debugger.

The community version supports only Firefox, the professional one also supports Internet Explorer.

Answer 7

For Internet Explorer debugging (and when you don't have VS 2008), you can use MS Script Editor. This is a good writeup on how to get it configured correctly:

http://www.jonathanboutelle.com/mt/archives/2006/01/howto_debug_jav.html

Answer 8

I work in Aptana. You set breakpoints, hover over variables, and do watches right in the editor. Love it. Never thought I'd move away from Firebug as my chief debugger.

Answer 9

If you're accustomed to using Firebug, you might like Firebug Lite, implemented in JavaScript. You can use it as a bookmarklet, which is nice. I'm not sure how powerful it is, I imagine other, "real" solutions are better, but it's handy in a pinch.

Answer 10

http://bimbim.in/post/2010/08/19/JavaScript-Vb-Script-debugging-Methods.aspx