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

push/pop vs unshift/shift (v26)

Revision 26 of this benchmark created on November 13, 2014

Preparation HTML

<script>
  var arr = ['a', 'b', 'c', 'd'];
var e;
</script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
Push/Pop	`e = pl.pop(); arr.push(e);`	ready
Unshift/Shift	`e = pl.pop(); arr.unshift(e);`	ready

Revisions

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

Revision 1: published on December 15, 2010
Revision 3: published on January 2, 2011
Revision 5: published on January 23, 2012
Revision 6: published on February 21, 2012
Revision 7: published by Foo Bar on May 28, 2013
Revision 8: published on July 11, 2013
Revision 9: published on July 11, 2013
Revision 10: published on July 16, 2013
Revision 11: published on July 30, 2013
Revision 12: published on August 29, 2013
Revision 15: published on January 15, 2014
Revision 16: published by test on March 31, 2014
Revision 17: published by test on March 31, 2014
Revision 19: published on April 13, 2014
Revision 20: published on July 18, 2014
Revision 21: published on August 11, 2014
Revision 22: published on August 31, 2014
Revision 23: published on September 2, 2014
Revision 24: published on September 28, 2014
Revision 25: published by Meneer R on October 30, 2014
Revision 26: published on November 13, 2014
Revision 27: published on November 13, 2014
Revision 28: published on December 4, 2014
Revision 29: published on December 4, 2014
Revision 30: published on December 4, 2014
Revision 31: published on December 4, 2014
Revision 32: published by Ingvar Stepanyan on January 14, 2015
Revision 33: published on February 15, 2015
Revision 35: published on May 14, 2015
Revision 37: published on June 18, 2015
Revision 38: published on August 10, 2015
Revision 39: published on September 4, 2015
Revision 40: published on October 10, 2015
Revision 41: published on November 11, 2015
Revision 42: published on November 13, 2015
Revision 43: published on December 4, 2015
Revision 45: published on December 18, 2015
Revision 48: published by CoryG on January 19, 2016
Revision 49: published on February 5, 2016
Revision 50: published on February 19, 2016