JavaScript performance comparison Revision 5 of this test case created on 29th August 2012 Preparation code <script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"> </script> <script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.3.3/underscore-min.js"> </script> Preparation code output Test runner Warning! For accurate results, please disable Firebug before running the tests.