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

RegExp test / search / match vs. indexOf / substr (v8)

Revision 8 of this benchmark created on September 12, 2012

Description

Testing for the existence of characters in a string using Regular Expressions test, search, match and substr compared to indexOf.

Preparation HTML

<script>
  var str = 'Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Hello, world. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler. Filler.';
</script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
test	`/o, w/.test(str);`	ready
search	`str.search(/o, w/) > -1;`	ready
match	`str.match(/o, w/).length > 0;`	ready
indexOf	`str.indexOf('o, w') != -1;`	ready

Revisions

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

Revision 1: published by Tom Doan on February 13, 2011
Revision 2: published on February 27, 2011
Revision 3: published by john on March 17, 2011
Revision 4: published on April 27, 2012
Revision 5: published on May 1, 2012
Revision 6: published on May 28, 2012
Revision 7: published on September 11, 2012
Revision 8: published on September 12, 2012
Revision 11: published on December 21, 2012
Revision 12: published by Mike Petrovich on December 26, 2012
Revision 13: published by Sudheer on December 31, 2012
Revision 14: published on January 3, 2013
Revision 15: published by Michael Sherov on January 3, 2013
Revision 17: published on February 19, 2013
Revision 18: published on March 11, 2013
Revision 19: published on May 14, 2013
Revision 22: published on May 22, 2013
Revision 25: published by Quango on June 5, 2013
Revision 26: published by MikeMac on June 24, 2013
Revision 27: published on June 25, 2013
Revision 28: published on July 8, 2013
Revision 29: published on July 10, 2013
Revision 31: published on September 26, 2013
Revision 32: published on October 24, 2013
Revision 33: published by Deryck on November 8, 2013
Revision 34: published on November 8, 2013
Revision 35: published on November 22, 2013
Revision 36: published on November 27, 2013
Revision 37: published on January 16, 2014
Revision 40: published on January 20, 2014
Revision 41: published on January 30, 2014
Revision 42: published on February 7, 2014
Revision 43: published by Lance on April 23, 2014
Revision 44: published on June 11, 2014
Revision 45: published on June 13, 2014
Revision 46: published on July 4, 2014
Revision 47: published on July 8, 2014
Revision 48: published on July 8, 2014
Revision 49: published on July 8, 2014
Revision 50: published on July 26, 2014
Revision 51: published on August 2, 2014
Revision 52: published on August 9, 2014
Revision 54: published on September 4, 2014
Revision 55: published on November 7, 2014
Revision 56: published on November 12, 2014
Revision 61: published by Brian Milton on January 22, 2015
Revision 63: published by Cenas on February 6, 2015
Revision 64: published by Luke Bonaccorsi on March 3, 2015
Revision 65: published on March 7, 2015
Revision 66: published by Single string match on March 10, 2015
Revision 68: published on March 19, 2015
Revision 69: published on April 1, 2015
Revision 71: published by me on April 12, 2015
Revision 72: published on May 8, 2015
Revision 73: published by Robert on May 7, 2015
Revision 74: published by test on May 11, 2015
Revision 75: published on May 14, 2015
Revision 76: published on May 20, 2015
Revision 78: published on June 2, 2015
Revision 79: published on June 2, 2015
Revision 80: published on June 3, 2015
Revision 81: published on June 16, 2015
Revision 82: published on July 15, 2015
Revision 83: published on September 2, 2015
Revision 84: published on September 11, 2015
Revision 85: published by tjaden on September 16, 2015
Revision 90: published on November 21, 2015
Revision 91: published on November 21, 2015
Revision 92: published on November 25, 2015
Revision 98: published on January 28, 2016
Revision 99: published on February 7, 2016