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

removePrefix alternatives

Benchmark created on September 28, 2023

Test runner

Ready to run.

Testing in
Test		Ops/sec
.slice	`let str = 'greninja' str.slice('gren'.length - 1)`	ready
regex	`let str = 'greninja' str.replace(/^gren/, '')`	ready

Revisions

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

Revision 1: published on September 28, 2023
Revision 2: published on September 28, 2023