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

=== "" vs .length > 0 (v20)

Revision 20 of this benchmark created on January 9, 2015

Preparation HTML

<script>
window.str = "";
</script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
=== ''	`(str === "hey");`	ready
.length > 1	`(str.length > 1);`	ready
exists	`(str)`	ready

Revisions

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

Revision 1: published on November 28, 2011
Revision 3: published on September 24, 2012
Revision 4: published on November 4, 2012
Revision 5: published on January 2, 2014
Revision 6: published by David Mulder on February 27, 2014
Revision 7: published on March 12, 2014
Revision 8: published on March 12, 2014
Revision 10: published on May 5, 2014
Revision 11: published on May 13, 2014
Revision 12: published on May 14, 2014
Revision 14: published on August 7, 2014
Revision 15: published by me on August 12, 2014
Revision 16: published on September 5, 2014
Revision 17: published on September 11, 2014
Revision 19: published on January 8, 2015
Revision 20: published on January 9, 2015
Revision 21: published on January 25, 2015
Revision 22: published on March 11, 2015
Revision 23: published on April 8, 2015
Revision 25: published on August 9, 2015
Revision 26: published on September 10, 2015
Revision 27: published on September 18, 2015
Revision 28: published by Rowan Thorpe on February 22, 2016