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

class vs attributes (v3)

Revision 3 of this benchmark created on January 25, 2012

Preparation HTML

<div class="pippo" pippo="true"></div>

Test runner

Ready to run.

Testing in
Test		Ops/sec
class	`document.getElementsByClassName('pippo');`	ready
attr	`document.querySelector('div[pippo]')`	ready

Revisions

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

Revision 1: published on January 18, 2012
Revision 2: published on January 18, 2012
Revision 3: published on January 25, 2012
Revision 4: published on January 25, 2012
Revision 7: published on March 14, 2015
Revision 8: published on April 6, 2015
Revision 10: published by Amiran on October 27, 2015
Revision 11: published by Amiran on October 27, 2015