Object.defineProperty vs __defineGetter__ vs normal (v46)

Revision 46 of this benchmark created on

Description

Test different access method to an object property

Preparation HTML

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

Test runner

Ready to run.

Testing in
TestOps/sec
Object.defineProperty
Object.defineProperty(obj, "x", {
  get: function() {
    return this._x
  },
  set: function(value) {
    this._x = value
  }
})

for (var i = 0; i < 1000; i++) {
  obj.x = i;
  acc += obj.x;
}
ready
__defineGetter__
obj.__defineGetter__('x', function() {
  return this._x
});
obj.__defineSetter__('x', function(value) {
  this._x = value
});

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

Revisions

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