Object.create vs Crockford vs Constructor

JavaScript performance comparison

Revision 29 of this test case created

Preparation code

<script>
  var sharedPrototype = {
    one: function() {
      return 1;
    },
    two: function() {
      return 2;
    },
    three: function() {
      return 3;
    }
  };

  var rodrigoCreate = function() {
      return new Constructor;
      };

  var crockfordCreate = function(proto) {
      var f = function() {};
      f.prototype = proto;
      return new f();
      };

  var Constructor = function() {};
  Constructor.prototype = sharedPrototype;

  var cornfordCreate = (function() {
    var f = function() {};
    return function(proto) {
      f.prototype = proto;
      return new f();
    };
  })();

  var cachedCornfordCreate = function(proto) {
      var f = function() {};
      f.prototype = proto;
      return function() {
        return new f();
      };
      };

  var cornfordCreate2 = cachedCornfordCreate(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;
while (i--) new Constructor;
pending…
Proto
var i = 100
while (i--) {
  ({
    '__proto__': Constructor
  })
}
pending…
Cornford Create
var i = 100;
while (i--) cornfordCreate(sharedPrototype);
pending…
Rodrigo Create
var i = 100;
while (i--) rodrigoCreate();
pending…
Cached Cornford Create
var i = 100;
while (i--) cornfordCreate2();
pending…
Rodrigo Nery Objeto
var i = 100;
while (i--) var objeto = objeto || {};
pending…

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Revisions

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