Dynamically debug and optimize applications with Firebug

Why does your Web page take so long to load. Whether you also want to check or edit HTML while browsing. Want to debug CSS right away. In this article, learn how to use the Firefox browser's free open source extension Firebug, which provides many useful development features and tools. You can use Firebug to monitor, edit, and debug active Web pages, including HTML, CSS, JavaScript code, and network traffic. In addition, learn how to use Firebug to speed up debugging and optimization of WEB and Ajax applications.

Brief introduction

Firebug is an open source extension to the Mozilla Firefox browser, providing many tools to monitor, edit, and debug cascading style sheets (CSS), HTML, Document object models (DOM), and JavaScript for any Web site. Firebug includes a JavaScript console, a logging API, and a useful Network Monitor. With Firebug, you can easily debug and optimize your Web and Ajax applications.

Firebug also has Firebug Lite versions for Internet Explorer, Opera, and Safari.

This article will help you familiarize yourself with the Firebug features of editing active Web pages HTML, CSS, and JavaScript debugging and profiling reports for logging to test Execution time use network Monitor to analyze load time error reports for Web pages

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Use Firefox to download Firebug. Install this extension by clicking the Orange button on the right side of the page Install Firebug .

After Firefox installs this extension, it restarts the browser. To use Firebug: Go to any Web page and press F12 to open Firebug in the browser window. Press ctrl-f12 to open Firebug in another window (this is a good feature if you have two monitors).

This article uses the first method to open Firebug in the same browser window, as shown in Figure 1:


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