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

Static vs new Arrays

Benchmark created on May 6, 2025

Test runner

Ready to run.

Testing in
Test		Ops/sec
static	`const input = [0,0,0,0,0,0,0,0];`	ready
new array	`const input = new Array(8).fill(0);`	ready

Revisions

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

Revision 1: published on May 6, 2025