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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

Test case details

Title *

Description
(Markdown syntax is allowed)

Preparation Code

Preparation HTML
(this will be inserted in the <body> of a valid HTML5 document in standards mode)
(useful when testing DOM operations or including libraries)

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id='box'></div>

Setup JS

var box = document.getElementById('box');
    for (var i=0;i<1000;i++){
        var c   = document.createElement('div');
        box.appendChild(c);
    }

Teardown JS

Test cases

Test #1

Title *

Async

Code *

while (box.firstChild) { 
  box.removeChild(box.firstChild); 
}

Test #2

Title *

Async

Code *if (box.firstChild) box.innerHTML = '';

Test #3

Title *

Async

Code *$(box).detach();

Test #4

Title *

Async

Code *$(box).remove();