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

String equality vs Strict equality (v2)

Revision 2 of this benchmark created on July 23, 2025

Setup

const str1 = "stringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillionchars";
const str2 = "stringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillioncharsstringwithmillionchars";

Test runner

Ready to run.

Testing in
Test		Ops/sec
Equality	`str1==str2;`	ready
Strict equality	`str1===str2;`	ready

Revisions

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

Revision 1: published on July 23, 2025
Revision 2: published on July 23, 2025
Revision 3: published on July 23, 2025