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Live Scratchpad


This add-on adds a live function evaluation feature to the Scratchpad.

You can change the arguments passed to the function and see the result of the function in real-time, including the intermediate assignments performed within the function. Click on values to inspect the properties of an object or of a DOM element. Branches not executed during evaluation are directly visible from the editor.

Build Instructions

From inside the project directory, run:



zip -r ../LiveScratchpad.xpi * -x ".git/*"


Note that the Live Scratchpad add-on requires Firefox 11 or later. Drag and drop LiveScratchpad.xpi in Firefox, follow instructions to install add-on.


To run the tests, you need to build Mozilla from source. Set environment variable OBJDIR to point to your tree's OBJDIR, then run :

make test


Licensed under the tri-license MPL 1.1/GPL 2.0/LGPL 2.1. See LICENSE.txt for details.

The logo icon.png and derivatives are attributed to the W3C and licensed under CC Attribution 3.0 Unported


For documentation, feedback, contributions :

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