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

instanceof performance (v11)

Revision 11 of this benchmark created by Theofilos Mouratidis on April 13, 2014

Setup

function Test() {
        this.property = true;
    }
    
    var t = new Test;

Test runner

Ready to run.

Testing in
Test		Ops/sec
instanceof	`if(t instanceof Test);`	ready
property	`if(t.constructor == Test);`	ready

Revisions

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

Revision 1: published on May 9, 2012
Revision 2: published on May 11, 2012
Revision 3: published on April 4, 2013
Revision 5: published on June 10, 2013
Revision 10: published on March 14, 2014
Revision 11: published by Theofilos Mouratidis on April 13, 2014
Revision 12: published by 4esn0k on May 14, 2014
Revision 13: published by eban on May 21, 2014
Revision 14: published by evilive on September 17, 2014
Revision 16: published on November 18, 2014
Revision 17: published by DrSlump on December 25, 2014
Revision 20: published on April 4, 2015
Revision 23: published on May 22, 2024