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

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Benchmark created by for vs while on September 28, 2012

Setup

var x;

Test runner

Ready to run.

Testing in
Test		Ops/sec
join	`x = [0, 1, 2, 3, 4, 5, 6, 7].join('');`	ready
strings	`x = '0' + '1' + '2' + '3' + '4' + '5' + '6' + '7'`	ready

Revisions

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

Revision 1: published by for vs while on September 28, 2012