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

replace() or substr() (v2)

Revision 2 of this benchmark created on March 6, 2012

Setup

var str = "a.aa.a.aa.";
    var regEx = /\.$/;

Test runner

Ready to run.

Testing in
Test		Ops/sec
substr	`str = str.substr(0, str.length-1);`	ready
replace	`str = str.replace(/\.$/, '');`	ready
slice	`str = str.slice(0,str.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 March 6, 2012
Revision 2: published on March 6, 2012
Revision 4: published on August 8, 2012
Revision 6: published on October 9, 2012
Revision 7: published on January 30, 2013
Revision 9: published on February 18, 2013
Revision 10: published on July 11, 2013
Revision 11: published on July 11, 2013
Revision 12: published on October 16, 2013
Revision 13: published on October 31, 2013
Revision 14: published on October 31, 2013
Revision 15: published on October 31, 2013
Revision 16: published on November 13, 2013
Revision 17: published on December 6, 2013
Revision 18: published on December 18, 2013
Revision 19: published by Shane on January 23, 2014
Revision 21: published on June 16, 2014
Revision 23: published on February 21, 2024
Revision 24: published on February 21, 2024