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

The Impact of Unnecessary Steps

Benchmark created by BretCameron on August 11, 2019

Test runner

Ready to run.

Testing in
Test		Ops/sec
Unnecessary Type Conversion	`'incorrect'.split('').slice(2).join('');`	ready
No Unnecessary Type Conversion	`'incorrect'.slice(2);`	ready

Revisions

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

Revision 1: published by BretCameron on August 11, 2019