Prototype vs Module pattern performance

JavaScript performance comparison

Revision 26 of this test case created by Andrew Petersen

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  Klass1 = function() { var privateArr = []; }
  Klass1.prototype.foo = function() {
    log('foo');
  }
  Klass1.prototype.bar = function() {
    log('bar');
  }
  
  Klass2 = function() {
    var privateArr = [];
    var foo = function() {
          log('foo');
        },
        bar = function() {
          log('bar');
        };
  
    return {foo: foo, bar: bar}
  }
  
  
  var FooFunction = function() {
    log('foo');
  };
  var BarFunction = function() {
    log('bar');
  };
  
  Klass3 = function() {
    var privateArr = [];
    return {foo: FooFunction, bar: BarFunction}
  }
  
  
  Klass4 = function() {
    var privateArr = [];
    this.foo = FooFunction;
    this.bar = BarFunction;
  }
  
  
  Klass5 = function(){
    var privateArr = [];
    // let's use `bind` to partially apply, to provide
    // access to the private variable. If not this, why else
    // would anyone use the module pattern?
    this.foo = FooFunction.bind(this, privateArr);
    this.bar = BarFunction.bind(this, privateArr);
  }
  
  Klass6 = function() {
    var privateArr = [];
    return {
      foo: FooFunction.bind(this, privateArr),
      bar: BarFunction.bind(this, privateArr)
    }
  }
  

};
</script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Prototypal
var i = 1000,
    objs = [];
while (i--) {
  var o = new Klass1()
  objs.push(new Klass1());
  o.bar;
  o.foo;
}
pending…
Module pattern
var i = 1000,
    objs = [];
while (i--) {
  var o = Klass2()
  objs.push(Klass2());
  o.bar;
  o.foo;
}
pending…
Module pattern with cached functions
var i = 1000,
    objs = [];
while (i--) {
  var o = Klass3()
  objs.push(Klass3());
  o.bar;
  o.foo;
}
pending…
Prototypal with cached
var i = 1000,
    objs = [];
while (i--) {
  var o = new Klass4()
  objs.push(new Klass4());
  o.bar;
  o.foo;
}
pending…
Prototypal with bound private
var i = 1000,
    objs = [];
while (i--) {
  var o = new Klass5()
  objs.push(new Klass5());
  o.bar;
  o.foo;
}
pending…
Module pattern with cached functions and bound private
var i = 1000,
    objs = [];
while (i--) {
  var o = Klass6()
  objs.push(Klass6());
  o.bar;
  o.foo;
}
pending…

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