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() vs. .split().join() vs .replaceAll() (v46)

Revision 46 of this benchmark created on December 28, 2013

Setup

var mystring = 'okay-this-is-a-string';

Test runner

Ready to run.

Testing in
Test		Ops/sec
.replace(/\-/g,'_')	`result = mystring.replace(/\-/g, '_');`	ready
.replace(new RegExp("-","gm"),"_")	`result = mystring.replace(new RegExp("-", "gm"), "_");`	ready
.split('-').join('_')	`result = mystring.split('-').join('_');`	ready

Revisions

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

Revision 1: published by Roberto Frega on September 19, 2012
Revision 2: published on September 25, 2012
Revision 3: published on November 2, 2012
Revision 4: published on November 6, 2012
Revision 5: published by rmaksim on November 13, 2012
Revision 6: published by dongy on November 15, 2012
Revision 9: published on January 5, 2013
Revision 10: published by Jens Duttke on February 1, 2013
Revision 11: published on February 14, 2013
Revision 12: published on February 14, 2013
Revision 14: published on February 22, 2013
Revision 15: published on February 22, 2013
Revision 16: published on February 22, 2013
Revision 17: published on February 26, 2013
Revision 18: published on February 26, 2013
Revision 19: published on March 1, 2013
Revision 20: published on March 3, 2013
Revision 21: published on March 3, 2013
Revision 23: published by Sanderd17 on April 15, 2013
Revision 24: published on May 2, 2013
Revision 25: published by joequincy on May 5, 2013
Revision 26: published on May 5, 2013
Revision 27: published on May 5, 2013
Revision 28: published on May 5, 2013
Revision 29: published on May 5, 2013
Revision 30: published on May 5, 2013
Revision 31: published by Tamil Vendhan on June 11, 2013
Revision 32: published on June 11, 2013
Revision 33: published on June 17, 2013
Revision 34: published on June 17, 2013
Revision 36: published on July 5, 2013
Revision 37: published on August 17, 2013
Revision 38: published on August 30, 2013
Revision 39: published on August 30, 2013
Revision 40: published on August 30, 2013
Revision 41: published by shilman on September 3, 2013
Revision 42: published on November 8, 2013
Revision 46: published on December 28, 2013
Revision 47: published on January 7, 2014
Revision 48: published on February 11, 2014
Revision 49: published on March 14, 2014
Revision 50: published on July 7, 2014
Revision 51: published on July 27, 2014
Revision 52: published on August 5, 2014
Revision 54: published on October 29, 2014
Revision 55: published by Harald Glatt on November 7, 2014
Revision 56: published by next on November 8, 2014
Revision 59: published on February 2, 2015
Revision 60: published on February 2, 2015
Revision 62: published by SgtPooki on March 3, 2015
Revision 63: published on May 22, 2015
Revision 64: published on June 16, 2015
Revision 65: published on August 6, 2015
Revision 66: published on September 7, 2015
Revision 67: published by taheta on September 19, 2015
Revision 68: published on January 15, 2016
Revision 69: published by Matt on January 17, 2016
Revision 72: published on March 1, 2016
Revision 73: published on March 1, 2016
Revision 74: published on March 1, 2016
Revision 75: published by Andrei F. on March 16, 2016