Object.create vs Crockford vs Constructor

JavaScript performance comparison

Revision 40 of this test case created

Preparation code

<script>
  var sharedPrototype = {
    one: function() {
     return 1;
    },
    two: function() {
     return 2;
    },
    three: function() {
      return 3;
    }
  };
 
  var crockfordCreate = function(proto) {
    var f = function() {};
    f.prototype = proto;
    return new f();
  };
 
  var crockfordEvolved = function (o) {
    function F() {}
    F.prototype = o;
    return new F();
  };

  var Constructor = function() {};
  Constructor.prototype = sharedPrototype;
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
Object.create()
var i = 100;
while (i--) Object.create(sharedPrototype);
pending…
Crockford Create
var i = 100;
while (i--) crockfordCreate(sharedPrototype);
pending…
Constructor
var i = 100;
var s;
while (i--) s = new Constructor;
pending…
Evolved
var i = 100;
while (i--) crockfordEvolved(sharedPrototype);
pending…

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Revisions

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