Object.create vs. new (v7)

Revision 7 of this benchmark created by timur on

Setup

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 Creator = function() {
  };
  Creator.prototype = MyClass;

Test runner

Ready to run.

Testing in
TestOps/sec
new operator
var obj = new MyClass(x, y);
doSomething(obj);
ready
Object.create().init()
var obj = Object.create(MyProtoClass).init(x, y);
doSomething(obj);
ready
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);
ready
Custom Create
var obj = new Creator();
doSomething(obj);
ready

Revisions

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