jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.

jsperf.com URLs are mirrored at the same path, e.g:

https://jsperf.com/negative-modulo/2

Can be accessed at:

https://jsperf.app/negative-modulo/2

hasClass vs is so (v22)

Revision 22 of this benchmark created on January 21, 2016

Preparation HTML

<div id="foo">I am a DIV</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
hasClass	`$('#foo').hasClass('bar');`	ready
is	`$('#foo').is('.bar');`	ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published by Sarfraz Ahmed on February 24, 2012
Revision 2: published on February 25, 2012
Revision 4: published by fearphage on May 11, 2012
Revision 6: published by hasClass vs is vs className on December 18, 2012
Revision 7: published on December 27, 2012
Revision 9: published by Maico Borges on April 5, 2013
Revision 10: published on June 14, 2013
Revision 11: published on December 15, 2013
Revision 12: published on January 6, 2014
Revision 13: published by Bob Radu on January 7, 2014
Revision 14: published on May 30, 2014
Revision 15: published on June 19, 2014
Revision 16: published on November 2, 2014
Revision 17: published on February 27, 2015
Revision 18: published on April 26, 2015
Revision 19: published by rulin on August 10, 2015
Revision 20: published by Ke on December 15, 2015
Revision 21: published by Ke on December 15, 2015
Revision 22: published on January 21, 2016