Object.defineProperty vs __defineGetter__ vs normal (v24)

Revision 24 of this benchmark created on

Description

Test different access method to an object property

Preparation HTML

<script>
  var obj = {
    _x: 0
  }
  var obj2 = {
    _x: 0,
    get () { return this.x; },
    set (value) { return this.x = value; }
  }

  var acc = 0;
  
  funct = {
    get: function() {
      return this._x
    },
    set: function(value) {
      return this._x = value;
    }
  }
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
Object.defineProperty
Object.defineProperty(obj, "x", {
  get: funct['get'],
  set: funct['set']
})

for (var i = 0; i < 1000; i++) {
  obj.x = i;
  acc += obj.x;
}
ready
__defineGetter__
obj.__defineGetter__('x', funct['get']);
obj.__defineSetter__('x', funct['set']);

for (var i = 0; i < 1000; i++) {
  obj.x = i;
  acc += obj.x;
}
ready
Normal
for (var i = 0; i < 1000; i++) {
  obj._x = i;
  acc += obj._x;
}
ready
Prototype
obj.prototype = {
  get x() {
    return this._x;
  }, set x(value) {
    this._x = value;
  }
}

for (var i = 0; i < 1000; i++) {
  obj.x = i;
  acc += obj.x;
}
ready
Setter
obj.setX = function(value) {
  this._x = value;
}

for (var i = 0; i < 1000; i++) {
  obj.setX(i);
  acc += obj._x;
}
ready
for (var i = 0; i < 1000; i++) {
  obj2.x = i;
  acc += obj.x
}
ready

Revisions

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