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

"~~" or ">>" on Strings (v2)

Revision 2 of this benchmark created by AlK on May 20, 2011

Preparation HTML

<script>
  var hex = '0xff2200';
  var num = 0xff2200;
</script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
>>	`hex >> 0;`	ready
~~	`~~hex;`	ready
>>>	`hex >>> 0;`	ready
*1	`hex * 1;`	ready
Number()	`Number(hex);`	ready
parseInt();	`parseInt(hex, 10);`	ready
num >>	`num >> 0;`	ready
~~num	`~~num;`	ready
+hex	`+hex;`	ready

Revisions

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

Revision 2: published by AlK on May 20, 2011