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

number to string (v32)

Revision 32 of this benchmark created by Tim Oxley on March 19, 2015

Preparation HTML

<script>
  var num = (1024 * 1024 * 1024 * 1024 * Math.random()),
      str;
</script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
String implicit	`str = '' + num;`	ready
String constructor	`str = String(num);`	ready
toString	`str = num.toString();`	ready
new String	`str = new String(num)`	ready

Revisions

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

Revision 1: published on April 23, 2011
Revision 2: published on April 23, 2011
Revision 3: published on February 8, 2013
Revision 4: published by Ted Ying on February 8, 2013
Revision 6: published on September 16, 2013
Revision 7: published by Red Forks on November 13, 2013
Revision 8: published by Red Forks on November 13, 2013
Revision 9: published on November 29, 2013
Revision 10: published on February 27, 2014
Revision 11: published on March 27, 2014
Revision 13: published by 4esn0k on April 28, 2014
Revision 14: published by Rob G on April 29, 2014
Revision 15: published by 4esn0k on May 15, 2014
Revision 16: published by 4esn0k on May 16, 2014
Revision 17: published on May 17, 2014
Revision 19: published by derry on June 23, 2014
Revision 21: published by Deividy on August 13, 2014
Revision 22: published on September 17, 2014
Revision 23: published on October 20, 2014
Revision 24: published on November 7, 2014
Revision 25: published on November 13, 2014
Revision 27: published by Plumpnation on December 3, 2014
Revision 28: published on December 6, 2014
Revision 29: published by andy on February 13, 2015
Revision 31: published by me on March 19, 2015
Revision 32: published by Tim Oxley on March 19, 2015
Revision 33: published by v on March 23, 2015
Revision 36: published on June 19, 2015
Revision 37: published on July 31, 2015
Revision 38: published on July 31, 2015
Revision 39: published on August 4, 2015
Revision 40: published by Tilman on August 17, 2015
Revision 42: published on August 23, 2015
Revision 43: published on September 29, 2015
Revision 44: published on October 19, 2015
Revision 45: published on October 21, 2015
Revision 46: published on October 23, 2015
Revision 47: published on December 10, 2015
Revision 48: published by Alexander Tsepkov on December 18, 2015
Revision 49: published on May 6, 2024