prototype vs closures

JavaScript performance comparison

Revision 30 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  function Person(name) {
    this.name = name;
  }
  
  Person.prototype.get_name = function() {
    return this.name;
  };
  
  Person.prototype.set_name = function(name) {
    this.name = name;
  };
  
  var person = function(name) {
      var p = {
        name: name
      };
  
      return {
        'get_name': function() {
          return p.name;
        },
  
        'set_name': function(name) {
          p.name = name;
        }
      };
  };
  
  var personGS = function(name) {
      var p = {
        name: name
      };
  
      return {
        get name() {
          return p.name;
        },
  
        set name(name) {
          p.name = name;
        }
      };
  };
  
  var personDP = function(name) {
      var o = {};
      var p = {
        name: name
      };
  
      Object.defineProperty(o, 'name', {
        get: function() {
          return p.name;
        },
  
        set: function(name) {
          p.name = name;
        }
      });
  
      return o;
  };
  
  var _p = new Person('John');
  var _c = person('John');
  var _gs = personGS('John');
  var _dp = personDP('John');

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Prototype init
var p = new Person('John');
pending…
Closure init
var c = person('John');
pending…
Closure init w/ getter and setter
var gs = personGS('John');
pending…
Prototype read
_p.get_name();
pending…
Closure read
_c.get_name();
pending…
Closure read w/ getter and setter
_gs.name;
pending…
Prototype write
_p.set_name('Jane');
pending…
Closure write
_c.set_name('Jane');
pending…
Closure write w/ getter and setter
_gs.name = 'Jane';
pending…
Closure init w/ Object.defineProperty
var dp = personDP('John');
pending…
Closure read w/ Object.defineProperty
_dp.name;
pending…
Closure write w/ Object.defineProperty
_dp.name = 'Jane';
pending…

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