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

cast vs Math.round vs parseInt (v155)

Revision 155 of this benchmark created on January 17, 2015

Test runner

Ready to run.

Testing in
Test		Ops/sec
Math.floor	`Math.floor('89');`	ready
Math.round	`Math.round('89');`	ready
parseInt	`parseInt('89');`	ready
parseInt + radix	`parseInt('89', 10);`	ready
cast	`+'89';`	ready
\|0	`'89'\|0;`	ready

Revisions

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

Revision 1: published by Felladrin on November 2, 2010
Revision 2: published by Batiste on February 10, 2011
Revision 5: published by John-David Dalton on April 6, 2011
Revision 6: published on May 20, 2011
Revision 7: published by Paul Straw on May 27, 2011
Revision 8: published by John-David Dalton on June 29, 2011
Revision 9: published by Fabrizio on August 31, 2011
Revision 10: published by runTarm on September 12, 2011
Revision 11: published on September 12, 2011
Revision 12: published on October 7, 2011
Revision 13: published by Steffen Haugk on October 12, 2011
Revision 14: published on October 15, 2011
Revision 15: published on October 16, 2011
Revision 16: published on October 31, 2011
Revision 17: published on October 31, 2011
Revision 18: published on November 7, 2011
Revision 19: published on November 15, 2011
Revision 20: published by Simon on December 6, 2011
Revision 21: published by Sam on December 22, 2011
Revision 22: published on January 10, 2012
Revision 23: published by Michael Programs on January 19, 2012
Revision 24: published on January 22, 2012
Revision 25: published on January 23, 2012
Revision 26: published by Yar on January 29, 2012
Revision 27: published on January 29, 2012
Revision 28: published by Yar on January 29, 2012
Revision 30: published by dested on February 14, 2012
Revision 31: published on February 16, 2012
Revision 32: published on February 18, 2012
Revision 33: published on February 21, 2012
Revision 34: published on February 21, 2012
Revision 35: published on February 21, 2012
Revision 36: published on February 23, 2012
Revision 37: published on April 18, 2012
Revision 38: published on May 5, 2012
Revision 39: published on May 8, 2012
Revision 41: published on May 31, 2012
Revision 42: published by Marco Pfeiffer on June 9, 2012
Revision 44: published on July 17, 2012
Revision 45: published by Jon-Carlos Rivera on July 17, 2012
Revision 46: published by Jon-Carlos Rivera on July 17, 2012
Revision 47: published by Philip Peterson on July 18, 2012
Revision 48: published on July 18, 2012
Revision 50: published on July 18, 2012
Revision 51: published by Jon-Carlos Rivera on July 18, 2012
Revision 52: published by Jon-Carlos Rivera on July 18, 2012
Revision 53: published on July 20, 2012
Revision 55: published on August 13, 2012
Revision 56: published on September 7, 2012
Revision 57: published by azazdeaz on September 16, 2012
Revision 58: published by azazdeaz on September 16, 2012
Revision 59: published on December 20, 2012
Revision 60: published on January 2, 2013
Revision 62: published on February 12, 2013
Revision 63: published by Eric Teubert on February 21, 2013
Revision 64: published on February 26, 2013
Revision 66: published on March 7, 2013
Revision 67: published on March 16, 2013
Revision 68: published on April 12, 2013
Revision 69: published on April 20, 2013
Revision 70: published on May 6, 2013
Revision 71: published on May 23, 2013
Revision 72: published on May 30, 2013
Revision 74: published on June 11, 2013
Revision 75: published on June 27, 2013
Revision 76: published by Devraj Mehta on July 11, 2013
Revision 77: published on July 12, 2013
Revision 79: published on July 17, 2013
Revision 80: published on July 17, 2013
Revision 81: published on July 21, 2013
Revision 82: published on July 25, 2013
Revision 83: published on July 25, 2013
Revision 85: published by atSetKey on July 25, 2013
Revision 86: published by Yaakov on August 7, 2013
Revision 87: published by imma on August 13, 2013
Revision 88: published on August 16, 2013
Revision 89: published by techmatt on August 23, 2013
Revision 90: published by maurizzzio on August 26, 2013
Revision 91: published on September 4, 2013
Revision 92: published by ly tran on September 5, 2013
Revision 93: published on September 27, 2013
Revision 94: published on October 15, 2013
Revision 95: published on October 15, 2013
Revision 96: published on October 21, 2013
Revision 97: published on October 28, 2013
Revision 98: published on October 29, 2013
Revision 99: published on November 2, 2013
Revision 100: published on November 3, 2013
Revision 101: published by gfx on November 5, 2013
Revision 103: published by Rob Adams on November 8, 2013
Revision 105: published on November 20, 2013
Revision 106: published on December 15, 2013
Revision 107: published on January 12, 2014
Revision 108: published on January 24, 2014
Revision 109: published on January 26, 2014
Revision 110: published by Rohit Vighne on January 28, 2014
Revision 111: published by Chen-Pang He on January 29, 2014
Revision 112: published by jdiaz5513 on February 1, 2014
Revision 114: published on February 25, 2014
Revision 115: published by Aicke Schulz on March 4, 2014
Revision 116: published on March 14, 2014
Revision 117: published by Shane Brinkman-Davis on April 1, 2014
Revision 118: published on May 5, 2014
Revision 120: published on May 22, 2014
Revision 121: published on May 22, 2014
Revision 122: published on May 22, 2014
Revision 123: published on May 22, 2014
Revision 124: published on May 22, 2014
Revision 125: published on May 24, 2014
Revision 126: published by PAEz on May 25, 2014
Revision 129: published on July 7, 2014
Revision 130: published by nordligulv on July 21, 2014
Revision 131: published on July 24, 2014
Revision 132: published on July 29, 2014
Revision 133: published on August 9, 2014
Revision 134: published on September 7, 2014
Revision 135: published by Heavensrevenge on September 11, 2014
Revision 136: published on September 30, 2014
Revision 138: published by bluefireuoop on October 24, 2014
Revision 139: published by Stefano Azzolini on November 4, 2014
Revision 140: published by Stefano Azzolini on November 4, 2014
Revision 141: published on November 8, 2014
Revision 143: published on November 22, 2014
Revision 147: published by Adametry on December 6, 2014
Revision 148: published on December 19, 2014
Revision 149: published by Leo Dutra on December 29, 2014
Revision 150: published by David on January 2, 2015
Revision 151: published by michael on January 4, 2015
Revision 152: published on January 6, 2015
Revision 153: published on January 15, 2015
Revision 154: published on January 15, 2015
Revision 155: published on January 17, 2015
Revision 156: published by julian on February 10, 2015
Revision 158: published by Roland Pihlakas on February 25, 2015
Revision 161: published by Riccardo Bartoli on March 12, 2015
Revision 162: published on May 12, 2023