Object.defineProperty vs __defineGetter__ vs normal (v33)

Revision 33 of this benchmark created on

Preparation HTML

<script>
var funct = {
   get: function() {
    return this._x
   },
   set: function(value) {
    this._x = value
   }
  }
var es5 = {
   _x: 0
  }
Object.defineProperty(es5, "x", {
 get: funct['get'],
 set: funct['set']
});

var es5ish = {_x:0}
es5ish.__defineGetter__('x', funct['get']);
es5ish.__defineSetter__('x', funct['set']);

var es3 = {
  _x : 0,
  getX: funct.get,
  setX: funct.set
}

var obj = {x:0};
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
Object.defineProperty
for (var i = 0; i < 1000; i++) es5.x += 1;
es5.x = 0;
ready
__defineGetter__
for (var i = 0; i < 1000; i++) es5ish.x += 1;
es5ish.x = 0;
ready
Normal
for (var i = 0; i < 1000; i++) obj.x += 1;
obj.x = 0;
ready
es3
for (var i = 0; i < 1000; i++) es3.setX(es3.getX() + 1);
es3.setX(0);
ready

Revisions

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