MeasureThat.net

Run results for: Data Properties vs. Accessor Properties vs. Getter / Setter Methods

The purpose of this benchmark is to determine the performance differences between data properties, accessor properties and getters / setter functions.

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:86.0) Gecko/20100101 Firefox/86.0
Firefox 86
Mac OS X 10.15
Desktop
4 years ago
Test name Executions per second
Read from data property 686991488.0 Ops/sec
Write to data property 523231200.0 Ops/sec
Read from accessor method 626472896.0 Ops/sec
Write to mutator method 481054080.0 Ops/sec
Read from object literal property 624092672.0 Ops/sec
Write to object literal property 473199744.0 Ops/sec
Read from object literal property on prototype 582725120.0 Ops/sec
Write to object literal property on prototype 419449568.0 Ops/sec
Script Preparation code:
​x
 
var data = {
  property: property
};
​
var property = undefined;
​
var method = {
  getProperty: function() {
    return property;
  },
​
  setProperty: function(value) {
    property = value;
  }
};
​
var objectLiteralAccessor = {
  get property() {
    return property;
  },
  set property(value) {
    property = value;
  }
};
​
function Class() {
}
​
Class.prototype = {
  get property() {
    return property;
  },
  set property(value) {
    property = value;
  }
};
    
var prototypeAccessor = new Class();
Tests:

  • Read from data property

     
    var value = data.property;

  • Write to data property

     
    data.property = true;

  • Read from accessor method

     
    var value = method.getProperty();

  • Write to mutator method

     
    method.setProperty(true);

  • Read from object literal property

     
    var value = objectLiteralAccessor.property;

  • Write to object literal property

     
    objectLiteralAccessor.property = true;

  • Read from object literal property on prototype

     
    var value = prototypeAccessor.property;

  • Write to object literal property on prototype

     
    prototypeAccessor.property = true;