A JavaScript implementation of RegExp for debugging purpose.
JavaScript CSS



Implementing the JavaScript RegExp object in pure JavaScript again.

Demo: http://jviereck.github.io/regexp.js/

A talk about RegExp.JS can be found here. Slides are available on SpeakerDeck.

Building and testing

Build the file build/browser.js by executing.

browserify index.js -d -w -o build/browser.js

To run (all) tests, you have to first get the files from


and place them under test/test262/. Then run

node test.js

to execute the tests from RegExp.JS themself and to run the test262 tests, run

node test/run_test262.js