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

Trailing slash removal

Benchmark created on July 7, 2025

Setup

const value = "https://example.com/some/long/path/";

Test runner

Ready to run.

Testing in
Test		Ops/sec
Substring	`value.substring(0, value.length - 1);`	ready
Slice	`value.slice(0, -1);`	ready
Replace (single slash)	`value.replace(/\/$/, "");`	ready
Replace (all slashes)	`value.replace(/\/+$/, "");`	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 7, 2025