Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36
Chrome 84
Mac OS X 10.14.6
Desktop
4 years ago
Test name Executions per second
Read from data property 13357053.0 Ops/sec
Write to data property 13392244.0 Ops/sec
Read from accessor method 6759366.5 Ops/sec
Write to mutator method 5137344.0 Ops/sec
Read from object literal property 5970924.0 Ops/sec
Write to object literal property 3007795.2 Ops/sec
Read from object literal property on prototype 6792034.0 Ops/sec
Write to object literal property on prototype 5099134.5 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;