Object.create() vs. constructor vs. object literal

JavaScript performance comparison

Revision 55 of this test case created

Preparation code

<script>
  var o;

  var Obj = function() {
   this.p = 1;
  };
 
  var propObj = {
   p: {
    value: 1
   }
  };
 
  var protoObj = {p: 1};
 
  function object(o) {
      function F() {}
      F.prototype = o;
      return new F();
  }

  function literal() {
    return {p: 1};
  }
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
Object.create() using in-place property object
o = Object.create(Object.prototype, {
 p: {
  value: 1
 }
});
pending…
Object.create() using pre-defined property object
o = Object.create(Object.prototype, propObj);
pending…
Constructor function
o = new Obj();
pending…
Object.create() using in-place prototype object
o = Object.create({p: 1});
pending…
Object.create() using pre-defined prototype object
o = Object.create(protoObj);
pending…
Crockford method using in-place prototype object
o = object({p: 1});
pending…
Crockford method using pre-defined prototype object
o = object(protoObj);
pending…
Object literal
o = literal();
pending…
last
o = {'p':1};
pending…

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