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

Fake Loops (v20)

Revision 20 of this benchmark created on April 16, 2011

Description

Loops for tiny arrays, w/ and w/o cashing

Preparation HTML

<script>
  var arr = [
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1],
   [1], v[1],
   [1],
   [1]
  ];
  var something;
</script>

Test runner

Ready to run.

Test Ops/sec

Wich cashing

Testing in
Test	Ops/sec
Wich cashing	`for (var i = 0; i < 8; ++i) { for (var j = 0, s = arr.length; j < s; ++j) { something += j % 2 * arr[i][j]; } }`	ready
Without caching	`for (var i = 0; i < 8; ++i) { for (var j = 0; j < arr.length; ++j) { something += j % 2 * arr[i][j]; } }`	ready

for (var i = 0; i < 8; ++i) {
 for (var j = 0, s = arr.length; j < s; ++j) {
  something += j % 2 * arr[i][j];
 }
}

ready

Without caching

for (var i = 0; i < 8; ++i) {
 for (var j = 0; j < arr.length; ++j) {
  something += j % 2 * arr[i][j];
 }
}

ready

Revisions

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

Revision 1: published by Mathias Bynens on July 20, 2010
Revision 2: published on August 2, 2010
Revision 4: published by Thomas Aylott on August 8, 2010
Revision 6: published by WebReflection on August 8, 2010
Revision 9: published by JFSIII on August 8, 2010
Revision 10: published by Thomas Aylott on August 8, 2010
Revision 17: published on March 25, 2011
Revision 18: published by Lockal on March 25, 2011
Revision 19: published by Lockal on March 25, 2011
Revision 20: published on April 16, 2011
Revision 21: published on October 11, 2011
Revision 22: published on December 8, 2011
Revision 23: published by Mike Lee on December 17, 2011
Revision 24: published on December 18, 2011
Revision 26: published by match vs split on February 5, 2012
Revision 27: published by John-David Dalton on February 7, 2012
Revision 29: published by Lucas Cepeda on March 14, 2012
Revision 30: published on March 17, 2012
Revision 31: published on March 19, 2012
Revision 32: published on March 23, 2012
Revision 33: published on April 23, 2012
Revision 34: published by FrancescoMM on July 3, 2012
Revision 35: published by Elijah Manor on July 3, 2012
Revision 38: published by D. S. Schneider on July 27, 2012
Revision 39: published on July 27, 2012
Revision 40: published on July 27, 2012
Revision 41: published by D. S. Schneider on July 28, 2012
Revision 42: published on July 28, 2012
Revision 43: published on July 29, 2012
Revision 44: published on July 29, 2012
Revision 46: published on August 21, 2012
Revision 47: published on October 17, 2012
Revision 48: published by Justin Bangerter on October 18, 2012
Revision 49: published by Conor Malone on November 11, 2012
Revision 50: published by Conor Malone on November 11, 2012
Revision 51: published by Tri on November 13, 2012
Revision 52: published by Raul on January 25, 2013
Revision 53: published on February 9, 2013
Revision 54: published on February 9, 2013
Revision 55: published on February 9, 2013
Revision 56: published on February 13, 2013
Revision 58: published on February 26, 2013
Revision 59: published on March 3, 2013
Revision 60: published on March 5, 2013
Revision 61: published on March 8, 2013
Revision 62: published on March 8, 2013
Revision 63: published on March 10, 2013
Revision 64: published on March 11, 2013
Revision 66: published on March 28, 2013
Revision 67: published on April 7, 2013
Revision 68: published on April 7, 2013
Revision 69: published on April 7, 2013
Revision 70: published on April 7, 2013
Revision 71: published on April 9, 2013
Revision 72: published on April 10, 2013
Revision 73: published by wfreytag on April 19, 2013
Revision 75: published on May 8, 2013
Revision 76: published on May 8, 2013
Revision 77: published on May 8, 2013
Revision 78: published on May 8, 2013
Revision 79: published on May 10, 2013
Revision 80: published on May 11, 2013
Revision 81: published by eTagTechnologies.Inc on May 11, 2013
Revision 82: published by JeanHuguesRobert on May 13, 2013
Revision 83: published on May 14, 2013
Revision 84: published by Simo on May 14, 2013
Revision 85: published on May 16, 2013
Revision 86: published by Matt on May 21, 2013
Revision 87: published on May 22, 2013
Revision 88: published on June 1, 2013
Revision 90: published on June 16, 2013
Revision 91: published by Jörg Schaper on June 16, 2013
Revision 94: published on July 1, 2013
Revision 95: published on July 1, 2013
Revision 96: published by phobia on July 5, 2013
Revision 97: published by BrunoLM on July 16, 2013
Revision 98: published by BrunoLM on July 16, 2013
Revision 99: published by K-Bone Stallone on July 23, 2013
Revision 100: published on July 23, 2013
Revision 102: published on July 23, 2013
Revision 103: published on July 23, 2013
Revision 104: published on July 23, 2013
Revision 105: published on July 25, 2013
Revision 106: published by vol7ron on July 31, 2013
Revision 107: published on August 8, 2013
Revision 108: published on August 14, 2013
Revision 109: published on August 15, 2013
Revision 110: published on August 23, 2013
Revision 111: published on September 3, 2013
Revision 114: published on September 11, 2013
Revision 115: published on September 23, 2013
Revision 116: published on September 29, 2013
Revision 117: published on October 7, 2013
Revision 118: published on October 7, 2013
Revision 120: published on October 11, 2013
Revision 121: published by Visha on October 15, 2013
Revision 122: published on October 18, 2013
Revision 123: published on October 18, 2013
Revision 124: published by Oliver Kovacs on October 21, 2013
Revision 125: published on October 27, 2013
Revision 126: published by Mac on October 28, 2013
Revision 127: published by Gabriel Dibble on October 28, 2013
Revision 128: published by ASM on November 12, 2013
Revision 129: published by Binyamin on November 19, 2013
Revision 130: published by Liam on November 22, 2013
Revision 131: published by Chris on November 22, 2013
Revision 132: published on December 10, 2013
Revision 133: published on December 13, 2013
Revision 135: published by Eric Perret on December 17, 2013
Revision 136: published on January 16, 2014
Revision 138: published on February 9, 2014
Revision 139: published on February 12, 2014
Revision 140: published on February 12, 2014
Revision 141: published on February 13, 2014
Revision 142: published on February 13, 2014
Revision 144: published on February 27, 2014
Revision 145: published on March 4, 2014
Revision 146: published on March 13, 2014
Revision 147: published on March 21, 2014
Revision 148: published on March 21, 2014
Revision 149: published on March 21, 2014
Revision 150: published on March 26, 2014
Revision 152: published on April 5, 2014
Revision 153: published by Kevin on April 22, 2014
Revision 154: published on April 24, 2014
Revision 155: published on April 24, 2014
Revision 156: published on April 27, 2014
Revision 157: published on April 27, 2014
Revision 158: published on May 2, 2014
Revision 159: published by asdffwqegvwvsd on May 23, 2014
Revision 160: published on June 5, 2014
Revision 161: published by Cycododge on June 9, 2014
Revision 162: published on June 9, 2014
Revision 163: published on June 10, 2014
Revision 164: published on June 23, 2014
Revision 165: published on June 25, 2014
Revision 166: published on July 2, 2014
Revision 167: published by Quentin on July 3, 2014
Revision 168: published on July 17, 2014
Revision 170: published on July 25, 2014
Revision 171: published on July 26, 2014
Revision 172: published on August 4, 2014
Revision 173: published on August 6, 2014
Revision 174: published on August 7, 2014
Revision 175: published on August 10, 2014
Revision 176: published by EDL on August 25, 2014
Revision 177: published by etoxin on September 11, 2014
Revision 178: published by etoxin on September 11, 2014
Revision 179: published on September 17, 2014
Revision 180: published by lokua on September 18, 2014
Revision 181: published by TigerC10 on October 8, 2014
Revision 182: published on October 15, 2014
Revision 183: published on October 21, 2014
Revision 184: published on October 24, 2014
Revision 185: published on October 30, 2014
Revision 187: published on November 21, 2014
Revision 188: published by Steven on December 10, 2014
Revision 190: published by Leo Dutra on December 26, 2014
Revision 191: published by Fred on February 4, 2015
Revision 192: published on February 4, 2015
Revision 193: published by Tyler Benton on February 5, 2015
Revision 194: published by sl on February 15, 2015
Revision 195: published on March 2, 2015
Revision 196: published on March 4, 2015
Revision 198: published on March 10, 2015
Revision 199: published on March 14, 2015
Revision 200: published on March 20, 2015
Revision 201: published by bob on March 22, 2015
Revision 202: published on April 2, 2015
Revision 203: published by archik on May 5, 2015
Revision 204: published by archik on May 5, 2015
Revision 205: published by Ben N on May 20, 2015
Revision 210: published on June 6, 2015
Revision 211: published on June 6, 2015
Revision 212: published on June 6, 2015
Revision 213: published by muffin on June 9, 2015
Revision 214: published by Jean Ducrot on June 19, 2015
Revision 215: published on August 9, 2015
Revision 216: published by Jack Frost on September 9, 2015
Revision 217: published by Jack Frost on September 10, 2015
Revision 218: published on September 12, 2015
Revision 219: published on September 23, 2015
Revision 220: published on September 23, 2015
Revision 221: published on September 23, 2015
Revision 222: published on October 26, 2015
Revision 223: published on October 26, 2015
Revision 224: published on November 4, 2015
Revision 225: published by Chris Temple on November 11, 2015
Revision 226: published by Inferius on November 20, 2015
Revision 227: published by spacious on November 20, 2015
Revision 228: published on November 30, 2015
Revision 231: published by caitlin on December 11, 2015
Revision 232: published on December 18, 2015
Revision 235: published by Martijn on January 6, 2016
Revision 236: published by lgmg on January 11, 2016
Revision 237: published by ajib on January 12, 2016
Revision 239: published by David Pate on January 22, 2016
Revision 240: published on January 22, 2016
Revision 241: published on February 12, 2016
Revision 262: published on November 13, 2018
Revision 270: published on February 28, 2019
Revision 277: published by Dries on April 23, 2019
Revision 280: published on June 21, 2019
Revision 291: published by Ludwig Stecher on March 24, 2020