Run results for: Data Properties vs. Accessor Properties vs. Getter / Setter Methods 1

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:

User agent: Mozilla/5.0 (Android 14; Mobile; rv:137.0) Gecko/137.0 Firefox/137.0

Browser: Firefox Mobile 137

Operating system: Android

Device Platform: Mobile

Date tested: 14 days ago

Test name	Executions per second
Read from data property	1053559040.0 Ops/sec
Write to data property	667213888.0 Ops/sec
Read from accessor method	200637168.0 Ops/sec
Write to mutator method	663203136.0 Ops/sec
Read from object literal property	206934000.0 Ops/sec
Write to object literal property	668268608.0 Ops/sec
Read from object literal property on prototype	205789296.0 Ops/sec
Write to object literal property on prototype	656327104.0 Ops/sec
Write to object	205450240.0 Ops/sec
Read to object	669246784.0 Ops/sec

Script Preparation code:

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 = {
  getProperty() {
    return property;
  },
  setProperty(value) {
    property = value;
  },
  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;
Write to object
var value = prototypeAccessor.getProperty();
Read to object
prototypeAccessor.setProperty(true);

Run results for: Data Properties vs. Accessor Properties vs. Getter / Setter Methods 1

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

Read from data property

Write to data property

Read from accessor method

Write to mutator method

Read from object literal property

Write to object literal property

Read from object literal property on prototype

Write to object literal property on prototype

Write to object

Read to object