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Firebug Tip: Conditional Breakpoints

Firebug is mainly a debugger and being able to stop Javascript execution on a breakpoint is obviously one of its essential features. Also, ability to break on a breakpoint only if certain condition is...

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Firebug Tip: Log DOM Events

Updated: how to use this feature from the command line This Firebug feature is called simply Log Events and allows developers to log DOM events into the Console panel. All you need to do is right click...

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Firebug Tip: Log Function Calls

Updated: how to use this feature from the command line Have you ever placed console.log into a JS function just to figure out whether the function has been executed? Did you also happen to make a...

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Firebug Tip: What the heck is BFCache?

Firebug's Net panel offers an option called Show BFCache Responses that allows tracking also responses coming from BFCache. But what the heck is this cache for? Read this post to understand how this...

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Firebug Tip: The Start Button

The Firebug entry point and also the only Firebug UI visible immediately after installation is s Firebug button (icon) placed at the right side of the navigation Firefox toolbar. This button is called...

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Support for performance.timing in Firebug

One of the new features introduced in Firebug 1.11 alpha 5 is new waterfall timing graph displayed in Firebug's Console panel and visualizing Navigation Timing data (measured events related to page...

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Firebug Tip: Observe window.postMessage() calls

One of the new improvements introduced in Firebug 1.11 beta 1 is better monitoring of messages sent between frames/windows. These messages are sent via window.postMessage. Couple of quick notes about...

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Firebug Tip: Styled Logging

Styled logging has been available in Firebug for long time and since version 1.11 beta 2 improves this little nifty feature, let's take a sneak peak at what it does and how it could be useful.   Styled...

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Firebug Tip: Copy & Paste HTML

Firebug 1.11 final has been just released and one of the new features introduced in this release is related to HTML clipboard. It's now easy to copy entire portions of existing HTML markup and paste it...

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Firebug Tip: include() command

Firebug Command Line is probably one of the most important Firebug features and its value is yet extended by set of built-in commands. One of the new commands, introduced in Firebug 1.11 is include()...

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Firebug Tip: Alternative Firebug Themes

Firebug UI is entirely based on XUL/HTML/CSS and so, it's easy to provide a new set of CSS styles (a theme) that modifies Firebug UI and adjust it to your needs and preferences. One of the typical...

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Instant Firebug Starter

I had an opportunity to be a reviewer of a new book about Firebug written by Chandan Luthra. This is actually the second book dedicated to Firebug and so, you might also be interested in the first one....

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How to properly filter DOM event logs?

One of the new features introduced in Firebug 1.12 alpha 5 is a filter for DOM event logs (issue 229). Logging of DOM events has been available in Firebug for a long time and the filter should make it...

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New Firebug feature: Use in Command Line

Firebug 1.12 alpha 6 introduces one new feature called simply: Use in Command Line This feature allows referring various page objects (HTML elements, JS objects, network requests, cookies, etc.) from...

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Firebug Tip: label dynamic scripts with ‘sourceURL’ directive

Firebug (and also Web Inspector) allows to label dynamically evaluated scripts using a special directive. The directive is a simple comment that is appended to the bottom of the evaluated script. //@...

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Firebug Extension: ConsoleExport – send console logs to the server

There are many Firebug extensions implementing new nifty features for Firebug and its great to see that new ones are still coming. In this post, we'll take a quick look at one of them: Console Export....

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Firebug Extension: FireLogger – server side logging

Another nice extension I would like to mention is related to server side logging: FireLogger FireLogger implements simple yet powerful server side logging (similar to console.log on the client side)....

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Firebug Extension: FireQuery – jQuery development

FireQuery is one of my favorite extensions for Firebug and I am regularly using it every time I am debugging web application that is build on top of jQuery.   FireQuery is a Firebug extension for...

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Firebug Extension: FireStorage Plus! – Manage web storage

Another Firebug extension we have tested with upcoming Firebug 1.12 (will be available in several weeks) allows managing web storage directly in your Firebug.   FireStorage Plus! appends an extra...

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Firebug Extension: FirePicker – Pick your color

I couldn't miss this nifty extension in my series of posts about Firebug extensions. It's a small plugin focused on one thing and working great! This extension is compatible with Firebug 1.12 (will be...

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