Development Blog

Firebug 1.12 beta 1 has Firebug 1.12 beta 1 (archive).

We have just switched to beta phase, which means that releases are solid, we are focusing only on bug fixing, no new features at this point and we appreciate feedback from beta testers.

Firebug 1.12 beta 1 fixes 19 issues
Firebug 1.12 beta 1 is compatible with Firefox 22-25

All users subscribed to the AMO beta channel will be automatically updated. See the Development Channel section at the bottom of the page.


A highlight from this release

This command returns the event listeners registered on a given object. The object is usually an element, but it can also be e.g. a ‘window’.


The return object can be further inspected in the DOM panel as depicted on the following screenshot.

getEventListeners() command

The screenshot shows an array with two listeners registered for the ‘load’ event. If you click on the f1() or f2() function, you’ll be automatically navigated to the Script panel to see the implementation.

You can try an example online.


Please post feedback in the newsgroup, thanks

Jan ‘Honza’ Odvarko


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