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

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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 Edg/144.0.0.0

Browser: Chrome 144

Operating system: Windows

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
Read from data property	166165792.0 Ops/sec
Write to data property	155263136.0 Ops/sec
Read from accessor method	163396256.0 Ops/sec
Write to mutator method	142794560.0 Ops/sec
Read from object literal property	76079008.0 Ops/sec
Write to object literal property	18611162.0 Ops/sec
Read from object literal property on prototype	152674624.0 Ops/sec
Write to object literal property on prototype	83404840.0 Ops/sec
R p0	50681036.0 Ops/sec
W p0	33292624.0 Ops/sec
r p1	44856460.0 Ops/sec
w p1	39637960.0 Ops/sec
r p2	33351264.0 Ops/sec
w p2	5733512.0 Ops/sec

Script Preparation code:

var property = 0;
var data = {
  property: property
};

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();

var p0 = new Proxy({}, {
   get(target, prop, receiver) {
    return property;
  },
  set(target, prop, value) {
    property = value;
    return true;
  },
});
var p1 = new Proxy({ property: 0 }, {
   get(target, prop, receiver) {
    return target[prop]
  },
  set(target, prop, value) {
    target[prop] = value;
    return true;
  },
});
var p2 = new Proxy({ property: 0 }, {
   get(target, prop, receiver) {
    return Reflect.get(target, prop, receiver);
  },
  set(target, prop, value, receiver) {
    return Reflect.set(target, prop, value, receiver);
  },
});

Tests:

Read from data property
var value = data.property;
Write to data property
data.property = property+1;
Read from accessor method
var value = method.getProperty();
Write to mutator method
method.setProperty(property+1);
Read from object literal property
var value = objectLiteralAccessor.property;
Write to object literal property
objectLiteralAccessor.property = property+1;
Read from object literal property on prototype
var value = prototypeAccessor.property;
Write to object literal property on prototype
prototypeAccessor.property = property+1;
R p0
var value = p0.property;
W p0
p0.property = property+1;
r p1
var value = p1.property;
w p1
p1.property = property+1;
r p2
var value = p2.property;
w p2
p2.property = property+1;

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

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

R p0

W p0

r p1

w p1

r p2

w p2