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

slice vs length - 1 (v13)

Revision 13 of this benchmark created on November 25, 2015

Setup

var x = "#/1fdefg/2fdsfe";

Test runner

Ready to run.

Testing in
Test		Ops/sec
slice	`var y = x.replace("#/", "").split("/").slice(-1)[0]`	ready
length - 1	`var y = x.replace("#/", "").split("/")[x.replace("#/", "").split("/").length - 1]`	ready

Revisions

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

Revision 1: published on January 7, 2014
Revision 2: published on January 15, 2014
Revision 3: published by Siarhei on January 28, 2014
Revision 4: published on February 22, 2014
Revision 7: published by cpburnz on November 20, 2014
Revision 8: published by Edub on February 23, 2015
Revision 9: published by Louis on May 26, 2015
Revision 11: published on October 31, 2015
Revision 12: published on November 3, 2015
Revision 13: published on November 25, 2015
Revision 14: published on November 25, 2015
Revision 15: published on February 26, 2016