Prototype vs Module pattern performance

JavaScript performance comparison

Revision 120 of this test case created by Mark Avery

Info

Removed iterations in tests, because jsperf already does that for us. And renamed variables to be more meaningful to us humans. And other cosmetic changes.

The most important thing to remember is to use the right tool for the job. All these tests do is reference an object with a complex memory allocation. When you don't need something fancy, you're better off using a regular old object

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    function TraditionalPrototypeClass() {}
   
    TraditionalPrototypeClass.prototype.foo = function(test) {
      test = test * test * test;
      test--;
      return test;
    };
   
    TraditionalPrototypeClass.prototype.bar = function(test) {
      return this.foo(test) * this.foo(test);
    };
   
    function ModulePatternClass() {
      this.foo = function(test) {
        test = test * test * test;
        test--;
        return test;
      };
   
      this.bar = function(test) {
        return this.foo(test) * this.foo(test);
      };
    }
   
    var ModuleCachePatternClass = (function() {
      function foo(test) {
        test = test * test * test;
        test--;
        return test;
      }
   
      function bar(test) {
        return this.foo(test) * this.foo(test);
      }
   
      return function() {
        this.foo = foo;
        this.bar = bar;
      };
    }());
   
    var standardObject = {
      foo: function(test) {
        test = test * test * test;
        test--;
        return test;
      },
      bar: function(test) {
        return this.foo(test) * this.foo(test);
      }
    };
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
Prototypal
var o = new TraditionalPrototypeClass();
o.bar(33)
pending…
Module pattern
var o = new ModulePatternClass();
o.bar(33)
pending…
Module pattern with cached functions
var o = new ModuleCachePatternClass();
o.bar(33)
pending…
Use the right tool for the job
var o = standardObject;
o.bar(33)
pending…

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Revisions

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