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:

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startsWith Regex vs indexOf (v2)

Revision 2 of this benchmark created by Tim on May 27, 2014

Test runner

Ready to run.

Testing in
Test		Ops/sec
Regex	`/^\./.test(".namespace"); /^\./.test("namespace");`	ready
indexOf	`".namespace".indexOf(".") === 0; "namespace".indexOf(".") === 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 3, 2014
Revision 2: published by Tim on May 27, 2014