Object.create vs. new

JavaScript performance comparison

Revision 14 of this test case created by MB

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  function MyClass(x, y) {
    this.x = x;
    this.y = y;
  }
  
  var MyProtoClass = {
    init: (function(x, y) {
      this.x = x;
      this.y = y;
      return this;
    }),
    x: 0,
    y: 0
  };
  
  function doSomething(obj) {
    var x = obj.x + obj.y,
      y = obj.x * obj.y,
      z = obj.x - obj.y;
  
    return x * y * z;
  }
  
  var x = 0 | (Math.random() * 10000),
    y = 0 | (Math.random() * 10000);
  
  var create = Object.create;

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
new operator
var obj = new MyClass(x, y);
doSomething(obj);
pending…
Object.create().init()
var obj = Object.create(MyProtoClass).init(x, y);
doSomething(obj);
pending…
Object.create()
//See if it might be faster by not calling the init function.

var obj = Object.create(MyProtoClass);
obj.x = x;
obj.y = y;
doSomething(obj);
pending…
create()
var obj = create(MyProtoClass).init(x, y);
doSomething(obj);
pending…

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Revisions

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