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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>
<script src="http://digg.googlecode.com/files/Class-0.0.2.js">
</script>
<script src="https://ajax.googleapis.com/ajax/libs/prototype/1.7.2.0/prototype.js">
</script>

Setup JSvar result = '';

Teardown JS

Test cases

Test #1

Title *

Async

Code *

var Animal = Class.create();
Animal.prototype = {
  initialize: function(name, sound) {
    this.name = name;
    this.sound = sound;
  },

  speak: function() {
    result = (this.name + " says: " + this.sound + "!");
  }
};
var cat = new Animal('Kitty', 'Meow');
cat.speak();

Test #2

Title *

Async

Code *

function Animal(name, sound) {
  this.name = name;
  this.sound = sound;
}

Animal.prototype.speak = function() {
  result = (this.name + " says: " + this.sound + "!");
}

var cat = new Animal('Kitty', 'Meow');
cat.speak();

Test #3

Title *

Async

Code *

var Animal = {
  init: function(name, sound) {
    this.name = name;
    this.sound = sound;
  },
  speak: function() {
    result = (this.name + " says: " + this.sound + "!");
  },
};

var cat = Object.create(Animal);
cat.init('Kitty', 'Meow');
cat.speak();

Test #4

Title *

Async

Code *

var Animal = Class.create({
  init: function(name, sound) {
    this.name = name;
    this.sound = sound;
  },
  speak: function() {
    result = (this.name + " says: " + this.sound + "!");
  }
});

var cat = new Animal('Kitty', 'Meow');
cat.speak();