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

plus one vs plusplus (v12)

Revision 12 of this benchmark created by Steve Francis on July 12, 2011

Preparation HTML

<script>
  var a = 0;
  var b = 1;
</script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
Plus 1	`a += 1;`	ready
PlusPlus	`a++;`	ready
Plus Variable	`a += b;`	ready
Reassignment	`a = a + 1;`	ready
Pre increment	`++a;`	ready
Reinitialize	`a = 0; a += 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 Mario Klingemann on March 6, 2011
Revision 2: published on March 6, 2011
Revision 3: published on March 6, 2011
Revision 4: published on March 6, 2011
Revision 5: published on March 6, 2011
Revision 6: published on May 30, 2011
Revision 9: published on June 8, 2011
Revision 10: published on June 13, 2011
Revision 12: published by Steve Francis on July 12, 2011
Revision 14: published on July 26, 2011
Revision 15: published on July 26, 2011
Revision 16: published by Rick Waldron on July 26, 2011
Revision 17: published by Rick Waldron on July 26, 2011