Web developers need no longer deal with the flakiness of Venkman, Mozilla’s venerable but stagnant JavaScript debugger.
With the release of FireBug 0.4, an excellent extension for analyzing JavaScript and CSS errors and XMLHttpRequest operations (AJAX) that we have covered before, Firefox now has a powerful, up-to-date debugger that you don’t need to hack to get working.
In addition to standard debugging capabilities like setting breakpoints, stepping through code, and inspecting variables, FireBug adds support for checking assertions, automatic breaking on JavaScript errors, and more.
If you do any JavaScript work at all, grab FireBug now and consider making a donation to developer Joe Hewitt, who built the thing in his spare time.
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- Truthy and Falsy: When All is Not Equal in JavaScript Anything in JavaScript can be considered to be either truthy...
- Introducing CodeBurner: the SitePoint HTML & CSS Reference Tool for Firebug CodeBurner is a new Firefox addon from SitePoint that integrates...
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Awesome!
May 25th, 2006 at 4:41 pm
[...] Firebug 0.4 includes Javascript Debugger – If you felt a lacking in the Javascript debugging department, check out this extension, from Kevin Yank [...]
May 25th, 2006 at 4:56 pm
One of the best FF extensions ever. I’ll need to reinstall it because Debugger tab is not visible after the upgrade… Or I missed something?
May 26th, 2006 at 5:52 am
You have to have Firefox 1.5 installed, anyways thanks for the heads up, I will definetly be using this in the near future!
May 26th, 2006 at 8:21 am
Simple reinstallation fixed the problem. So, if you upgrade FireBug and don’t have debugger tab visible just reinstall.
May 26th, 2006 at 11:26 am
With the latest JS Debugger in Firebug, I’ll have to go back and reinstall it. Otherwise it was just another validator that that alerted me of the hundreds of invalid webpages I visit everyday.
Just briefly after looking at some of the latest screenshots I like how you can view logs of xmlHttpRequests and their responses. I think I’m really going to like this tool now :)
May 27th, 2006 at 2:52 pm
Cool. So I can now start fixing those bugs now :)
May 27th, 2006 at 11:43 pm
[...] http://www.sitepoint.com/blogs/2006/05/25/firebug-04-includes-javascript-debugger/ [...]
May 28th, 2006 at 1:52 am
[...] Firebug 0.4 includes Javascript Debugger – If you felt a lacking in the Javascript debugging department, check out this extension, from Kevin Yank [...]
May 28th, 2006 at 5:37 am
It’s a nice debugger, but venkman is more powerfull. By the way: I had never Problems with venkman.
June 8th, 2006 at 9:46 pm
When I have ‘Show XMLHttpRequests’ marked, it “steals” the request that I make. Which makes it kind of a pain to use for debugging requests.
Anyone else have that problem? or do I not implement something right?
That would be my only problem, otherwise it is great.
June 9th, 2006 at 12:11 am
This is a great debugger, be cautioned to put break on errors when you are working with XMLHttpRequest
June 9th, 2006 at 1:33 am
Does anyone know if there is an extension that can debug php like this?
If not, what php debuggers are good? I’m goint to take a look at NuShpere PhpED soon.
thanks
pk
June 14th, 2006 at 3:44 am
check out http://www.eclipse.org/
June 14th, 2006 at 4:12 am
Nice Javascript debuggers review can be find here:
http://www.ajaxpath.com/ajax-debuggers/
August 22nd, 2006 at 4:40 am
from where can i download firebug can u plz give the details of the URL for the firebug ?
September 18th, 2006 at 2:13 pm
http://www.joehewitt.com/software/firebug/
September 18th, 2006 at 2:39 pm