I :heart; Venkman Javascript Debugger

[fs5]

/me hugs firefox + venkman

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

If you guys ever have problems with debugging javascript code, GET THIS.

 

[kamper]

Me too. Would be nice if it could do it for every browser, though, so you don't have to switch over to test on that other annoying one that the majority of the population seems to use

 

[fs5]

well for 'that' one I use the script debugger, sometimes more useful than the ff javascript console. This one will show you the script even though it's inline
http://www.microsoft.com/downloads/deta...-4569-b3c4-dffdf19ccd99&DisplayLang=en

Also for FireFox 1.5, I've switched out the javascript console because as for 1.5 all css errors also get reported in there. Console² lets you filter which ones get showed.
https://addons.mozilla.org/extensions/moreinfo.php?id=1815&application=firefox