Run results for: Data Properties vs. Accessor Properties vs. Getter / Setter Methods v3

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 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 128

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
✓ Read from data property	12,674,681 Ops/sec
Write to data property	12,658,246 Ops/sec
Read from accessor method	12,462,773 Ops/sec
Read from object literal property on prototype	12,109,050 Ops/sec
Read from object literal property	10,042,829 Ops/sec
Write to mutator method	3,327,352 Ops/sec
Write to object literal property on prototype	2,811,944 Ops/sec
Write to object literal property	2,179,403 Ops/sec

Test name

Executions per second

✓ Read from data property

12,674,681 Ops/sec

Write to data property

12,658,246 Ops/sec

Read from accessor method

12,462,773 Ops/sec

Read from object literal property on prototype

12,109,050 Ops/sec

Read from object literal property

10,042,829 Ops/sec

Write to mutator method

3,327,352 Ops/sec

Write to object literal property on prototype

2,811,944 Ops/sec

Write to object literal property

2,179,403 Ops/sec

Script Preparation code:

const foo = 5


var data = {
  property: foo
};



var method = {
  getProperty: function() {
    return foo;
  },

  setProperty: function(value) {
    property = value;
  }
};

var objectLiteralAccessor = {
  get property() {
    return foo;
  },
  set property(value) {
    property = value;
  }
};

function Class() {
}

Class.prototype = {
  get property() {
    return foo;
  },
  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;