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

Array Assignment vs Array Push (v7)

Revision 7 of this benchmark created on January 14, 2014

Description

You've heard the rumors - now here's the proof.

Test runner

Ready to run.

Testing in
Test		Ops/sec
direct assignment	`var arrayA = ['email', 'password'];`	ready
empty assignment, and push	`var arrayB = []; arrayB.push('email', 'password');`	ready

Revisions

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

Revision 1: published by Rick Waldron on September 17, 2010
Revision 2: published by mrgnou on December 9, 2012
Revision 3: published on December 21, 2012
Revision 4: published by Timo on February 14, 2013
Revision 5: published by Nige White on February 21, 2013
Revision 7: published on January 14, 2014
Revision 8: published by trivial-jquery-js-selector on January 14, 2014
Revision 9: published on April 1, 2014
Revision 10: published by bluefireuoop on May 12, 2014
Revision 11: published on May 13, 2014
Revision 12: published on February 23, 2015