What is a good Javascript debugging tool?

Question

Haven\'t touch javascript for 3 years. Just got a javascript project and wanted to know any new ways or tools emerged these years to debug javascript? I used alert 3 years

Answer 1

You really need a crossbrowser toolkit. Here's mine:

• Gecko (Firefox) : Firebug
• Opera : Dragonfly
• WebKit (Safari / Chrome) : Web Inspector
• IE : Microsoft script debugger

EDIT:

IE 8 added some developer tools, but I haven't used them to any great extent.

EDIT:

If you haven't done JS development in a while I recommend saving yourself a lot of time debugging cross browser issues by browsing the compatibility tables on Peter-Paul Koch's excellent quirksmode site.