FireBug: The Ultimate JavaScript, DHTML, AJAX Debugger

I only just wrote an article on Console² and I found something better – FireBug. FireBug is a new tool for Firefox that aids with debugging Javascript, DHTML, and Ajax. It is like a combination of the Javascript Console, DOM Inspector, and a command line Javascript interpreter.

FireBug is fairly simple – it adds a console to the bottom of every web page in Firefox. It enables the following features:

  • Mouse-over DOM Elements on the page
  • Type in JS expressions into the command line for execution
  • Inspect AJAX (XMLHttpRequest) responses as text or XML
  • Only show errors for the current page – previous data is cleared
  • Display JavaScript, CSS or XML Errors
  • Show a red dot in the Status Bar to indicate errors on the current page
  • Set preferences on what errors you want to see

If you are a developer you can even get your page to write directly to Firebug – instead of using "alert()" or other methods for debugging. There is even a tutorial on how to do this.

Yup, you have to install this one

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