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 object literal property on prototype	12,467,932 Ops/sec
Write to data property	12,437,469 Ops/sec
Read from accessor method	12,417,319 Ops/sec
Read from data property	12,367,794 Ops/sec
Read from object literal property	9,836,302 Ops/sec
Write to object literal property on prototype	3,345,528 Ops/sec
Write to mutator method	3,317,812 Ops/sec
Write to object literal property	2,330,261 Ops/sec

Test name

Executions per second

✓ Read from object literal property on prototype

12,467,932 Ops/sec

Write to data property

12,437,469 Ops/sec

Read from accessor method

12,417,319 Ops/sec

Read from data property

12,367,794 Ops/sec

Read from object literal property

9,836,302 Ops/sec

Write to object literal property on prototype

3,345,528 Ops/sec

Write to mutator method

3,317,812 Ops/sec

Write to object literal property

2,330,261 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;