1 Screencasts tagged with Firefox
#25 The Firebug Firefox extension
Firebug is a web developer's best friend. Firebug lets you easily inspect the HTML, JavaScript, and CSS source code and make realtime modifications.
Firebug doesn't stop there - you can view HTTP requests, debug JavaScript and CSS, view page errors, and much much more. Firebug is also extensible. We'll take a quick peek at Yahoo's YSlow plugin which gives you report card like grades on performance.





