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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)

<div id="test-area" style="height: 75px; width: auto; overflow:scroll">
</div>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>

Setup JS

Teardown JS


    $('#test-area').empty();

Test cases

Test #1

Title *

Async

Code *

var raw_fragment = document.createDocumentFragment();
//var i = 1;
//for (i; <= 100000; i++) {
var p = document.createElement("p");
p.appendChild(document.createTextNode("raw javascript, documentFragment"));
raw_fragment.appendChild(p);
//}
document.getElementById('test-area').appendChild(raw_fragment);

Test #2

Title *

Async

Code *

var jq_fragment = $('<div/>');

//var i = 1;
//for (i; <= 100000; i++) {
var p = $('<p/>');
p.append("jquery elements");
jq_fragment.append(p);
//}
$('#test-area').append(jq_fragment);