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

tilde vs floor (v2)

Revision 2 of this benchmark created by download on November 10, 2011

Description

Comparison between ~~ and Math.floor

Preparation HTML

<script>
  var x = 3.14;
</script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
tildes	`var y = ~~x;`	ready
floor	`var y = Math.floor(x);`	ready
parseInt	`var y = parseInt(x);`	ready

Revisions

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

Revision 1: published by Göran Andersson on August 25, 2011
Revision 2: published by download on November 10, 2011
Revision 3: published by Eric on January 10, 2012
Revision 4: published on March 3, 2012
Revision 5: published on March 6, 2012
Revision 6: published on March 8, 2012
Revision 7: published on July 18, 2012
Revision 8: published on July 21, 2012
Revision 9: published by Austin on July 22, 2012
Revision 11: published by Jack Rugile on August 23, 2013
Revision 12: published on April 24, 2014
Revision 13: published on March 15, 2015
Revision 14: published on May 19, 2015
Revision 16: published by Thomas on March 3, 2016