xBug is a JavaScript debugger that enables you to trace or step through your JavaScript code in real-time.
Using xBug, you can:
- set breakpoints, and watchpoints in a separate code window
- see a trace log while your code is executing
- inspect variables
- get an indexed list of the functions/methods, and more…
It works with Chrome, Firefox 2/3, IE 6/7 & Safari 3.
Website: http://www.xbug.co.uk/
