Object.defineProperty vs __defineGetter__ vs normal (v41)

Revision 41 of this benchmark created by yzsolt on

Description

Test different access method to an object property

Setup

var obj = {
     _x: 0
    };
      
    var acc = 0;

Test runner

Ready to run.

Testing in
TestOps/sec
Object.defineProperty
alert(obj);

Object.defineProperty(obj, "x", {
 get: function() { return this._x; },
 set: function( xd ) { this._x = xd; }
});

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( xd ) { this._x = xd; });

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 and getter
obj.getX = function() {
 return this._x;
}

obj.setX = function(value) {
 this._x = value;
}

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

Revisions

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