JavaScript

by Zulkarnain K.

10 Add-ons in this Collection

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 52 reviews

51,215 users

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

Custom Buttons by Yan, cubegm, others

Rated 4 out of 5 stars 124 reviews

4,390 users

Gives a possibility to create custom toolbarbuttons...

Scriptish by Erik Vold, Nils Maier, others

Rated 4 out of 5 stars 109 reviews

14,296 users

The greatest user script engine on the Internet (a fork of Greasemonkey).

Execute JS by Rudolf Noe

Rated 5 out of 5 stars 15 reviews

1,658 users

Execute JS is a enhanced JavaScript-Console, where you can comfortably enter and execute arbitrary JavaScript-Code and modify functions...

Developer Assistant by Ted Mielczarek, Gavin Sharp, others

Rated 4 out of 5 stars 46 reviews

876 users

A suite of tools for developers.

JavaScript Object Examiner by Chuck_Baker

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Experimental

Not yet rated

244 users

Display JavaScript object methods and properties for any available scope.

Mozilla Labs - Jetpack Prototype by Mozilla Labs

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Experimental

Rated 4 out of 5 stars 27 reviews

18 users

Jetpack Prototype is an experiment in making it easy to build Firefox add-ons using common web technologies.

XPCOMViewer by Ondřej Doněk

Rated 4 out of 5 stars 6 reviews

89 users

XPCOMViewer is tiny tool for exploring XPCOM components.

JSON Inspector by Zulkarnain K.

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Experimental

Not yet rated

90 users

Inspect JSON object from a URL or entered data.
Requires either DOM Inspector or DOM Inspector Plus! [dm] extension.

Custom Buttons² by SCClockDr, nicholasalipaz, others

Rated 4 out of 5 stars 75 reviews

54 users

The Custom Buttons² Firefox extension provides the code base support necessary to create, maintain, import, and export custom toolbar buttons. The buttons can perform just about any task, with a large number of buttons already available on the exte...

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