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

indexOf And Tilde (v7)

Revision 7 of this benchmark created on June 20, 2013

Test runner

Ready to run.

Testing in
Test		Ops/sec
indexOf	`21.001 << 1 >> 1`	ready
tilde	`~~21.001`	ready
Math	`Math.floor(21.001)`	ready
PIPE	`21.001 \| 0`	ready
One Shift	`21.001 << 0`	ready

Revisions

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

Revision 1: published by Wyatt on October 9, 2011
Revision 2: published on February 27, 2012
Revision 4: published on August 30, 2012
Revision 7: published on June 20, 2013