JavaScript

by Zulkarnain K.

25 Add-ons in this Collection

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 854 reviews

1,801,849 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

iMacros for Firefox by iOpus

Rated 4 out of 5 stars 335 reviews

304,697 users

Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the soluti...

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 48 reviews

250,700 users

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

JavaScript Deobfuscator by Wladimir Palant

Rated 4 out of 5 stars 19 reviews

59,319 users

This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.

Scriptish by Erik Vold, Nils Maier, others

Rated 5 out of 5 stars 86 reviews

87,232 users

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

PrefBar by Manuel Reimer

Rated 5 out of 5 stars 32 reviews

13,564 users

The all in one toolbar(item). Houses and manages bigger amounts of buttons (Clear Cache, Clear Cookies, ...), Menus (User Agent spoof...) and checkboxes (Javascript, Flash, ...). Extensible from online-database or with self created buttons.

Custom Buttons by Yan, cubegm, others

Rated 4 out of 5 stars 70 reviews

92,575 users

Gives a possibility to create custom toolbarbuttons...

JSONovich by mjgiarlo, Will Elwood

Rated 4 out of 5 stars 28 reviews

8,283 users

Pretty-prints JSON content in the browser for easy, unobtrusive viewing.

JavaScript Terminal by Paul Rouget

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Experimental

Rated 5 out of 5 stars 4 reviews

7,502 users

JavaScript Terminal for Firefox.

Execute JS by Rudolf Noe

Rated 5 out of 5 stars 13 reviews

7,721 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 45 reviews

4,267 users

A suite of tools for developers.

Javascript Command by max1million

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Experimental

Rated 4 out of 5 stars 12 reviews

5,174 users

For writing/testing javascript on Firefox windows (extension development, etc), web pages, and bookmarklets.

uc by matyr

Rated 5 out of 5 stars 10 reviews

1,673 users

A userChromeJS clone with built-in subscript/overlay loader capability.

JavaScript Object Examiner by Chuck_Baker

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Experimental

Rated 5 out of 5 stars 1 review

3,284 users

Display JavaScript object methods and properties for any available scope.

JSON Inspector by Zulkarnain K.

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Experimental

Not yet rated

253 users

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