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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>

Setup JS

Teardown JS

Test cases

Test #1

Title *

Async

Code *

function aFoo() {
 var x;
 for (i = 0; i < 10; i++) {
  x = Math.random();
 }
}
aFoo();

Test #2

Title *

Async

Code *

var aBar = function() {
 var x;
 for (i = 0; i < 10; i++) {
  x = Math.random();
 }
};
aBar();

Test #3

Title *

Async

Code *

$.extend({
 aBaz: function() {
  var x;
  for (i = 0; i < 10; i++) {
   x = Math.random();
  }
 }
});
$.aBaz();

Test #4

Title *

Async

Code *

Object.prototype.aQuux = function() {
 var x;
 for (i = 0; i < 10; i++) {
  x = Math.random();
 }
};
var obj = {};
obj.aQuux();

Test #5

Title *

Async

Code *

var x;
for (i = 0; i < 10; i++) {
 x = Math.random();
}