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 Substr vs Substring vs [ ] Methods (v34)

Revision 34 of this benchmark created on March 4, 2014

Description

This is comparing the runtimes of substr, substring, and slice in a string for large (10000 character) string size.

Setup

var str = "DzjKbdy1fysm5LiEbCNUmbl9wqaAKL0o6Uqh3bIIsqhjelP5175uj3gtwxrVH2HaeXw1lrh8WvauFb1yhCqHLu";

Test runner

Ready to run.

Testing in
Test		Ops/sec
Substring	`str.substring(0, length - 1);`	ready
substr	`str.substr(0, length - 1);`	ready
slice	`str.slice(0, -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 Kon P on January 26, 2012
Revision 2: published on January 26, 2012
Revision 3: published on February 18, 2012
Revision 4: published on March 27, 2012
Revision 5: published on March 27, 2012
Revision 6: published by klaus lynggard hougesen on May 2, 2012
Revision 7: published by Aaron Patterson on May 14, 2012
Revision 8: published on July 31, 2012
Revision 11: published on November 29, 2012
Revision 12: published on January 15, 2013
Revision 13: published on February 13, 2013
Revision 14: published on May 16, 2013
Revision 17: published on May 31, 2013
Revision 18: published by Avenger7x on June 12, 2013
Revision 19: published on June 14, 2013
Revision 20: published on June 14, 2013
Revision 22: published on June 20, 2013
Revision 23: published by Alexander on August 22, 2013
Revision 24: published by bjorn on September 20, 2013
Revision 25: published on September 26, 2013
Revision 26: published on October 2, 2013
Revision 28: published on October 29, 2013
Revision 29: published on November 26, 2013
Revision 30: published on December 6, 2013
Revision 31: published on December 30, 2013
Revision 32: published by Lucas on February 10, 2014
Revision 34: published on March 4, 2014
Revision 35: published on March 5, 2014
Revision 36: published by David Martinez on March 18, 2014
Revision 37: published on April 7, 2014
Revision 38: published on April 7, 2014
Revision 39: published by derry on April 11, 2014
Revision 40: published by Oleg2tor on April 12, 2014
Revision 41: published on April 27, 2014
Revision 44: published on May 15, 2014
Revision 45: published on May 28, 2014
Revision 46: published on May 30, 2014
Revision 47: published on May 30, 2014
Revision 48: published on June 23, 2014
Revision 49: published by Gilad on June 26, 2014
Revision 50: published on July 16, 2014
Revision 51: published on July 18, 2014
Revision 52: published on August 6, 2014
Revision 53: published by test on September 4, 2014
Revision 54: published on September 16, 2014
Revision 55: published by Mahony Patrick on September 23, 2014
Revision 56: published by Bernard Poulin on September 24, 2014
Revision 57: published by Domo on November 3, 2014
Revision 58: published by mike2 on November 16, 2014
Revision 59: published on November 19, 2014
Revision 60: published on November 19, 2014
Revision 61: published on December 10, 2014
Revision 64: published on January 12, 2015
Revision 65: published on January 15, 2015
Revision 70: published on February 4, 2015
Revision 71: published on February 5, 2015
Revision 72: published on February 5, 2015
Revision 75: published on February 18, 2015
Revision 77: published on March 25, 2015
Revision 78: published on April 8, 2015
Revision 79: published by fundon on April 10, 2015
Revision 80: published on April 30, 2015
Revision 81: published on May 3, 2015
Revision 83: published on May 13, 2015
Revision 88: published on May 28, 2015
Revision 89: published by alexander on July 14, 2015
Revision 90: published by jz on August 4, 2015
Revision 91: published by ethan on August 14, 2015
Revision 92: published by ethan on August 14, 2015
Revision 93: published by ethan on August 14, 2015
Revision 94: published on August 30, 2015
Revision 95: published by Dustin Dowell on September 1, 2015
Revision 97: published on September 12, 2015
Revision 98: published on September 18, 2015
Revision 99: published on September 20, 2015
Revision 100: published by Ming on September 25, 2015
Revision 101: published by Arkh on October 19, 2015
Revision 102: published on October 28, 2015
Revision 103: published on November 9, 2015
Revision 104: published on November 16, 2015
Revision 105: published on November 16, 2015
Revision 108: published on November 25, 2015
Revision 109: published by HIn on December 4, 2015
Revision 110: published by hin on December 4, 2015
Revision 111: published by hin on December 4, 2015
Revision 112: published on December 23, 2015
Revision 113: published by pusha on December 25, 2015
Revision 114: published on December 31, 2015
Revision 115: published on January 4, 2016
Revision 116: published by David V on January 12, 2016
Revision 117: published by David V on January 12, 2016
Revision 118: published by David V on January 12, 2016
Revision 119: published by luplup on January 15, 2016
Revision 120: published on January 19, 2016
Revision 122: published on January 26, 2016
Revision 123: published on January 27, 2016
Revision 124: published by pusha on February 3, 2016
Revision 125: published on February 4, 2016
Revision 147: published by Zack Jackson on July 8, 2019