Info

Using prototype private methods vs. initialize private methods in a function constructor.

Preparation code

<script>
  function ConstructorPrivateMethods() {
   function privateMethod1(n) {
    return 2 * n;
   }
  
   function privateMethod2(n) {
    return 3 * n;
   }
  
   this.publicMethod1 = function(n) {
    return privateMethod1(privateMethod2(n));
   };
  }
  
  function PrototypePrivateMethods() {}
  
  (function() {
  
   function privateMethod1(n) {
    return 2 * n;
   }
  
   function privateMethod2(n) {
    return 3 * n;
   }
  
   PrototypePrivateMethods.prototype = {
    publicMethod1: function(n) {
     return privateMethod1(privateMethod2(n));
    }
   };
  
  })();
</script>

Test runner

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for (var i = 0; i < 1000; i++) {
 new ConstructorPrivateMethods();
}

for (var i = 0; i < 1000; i++) {
 new PrototypePrivateMethods();
}

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published by Nicolas on 10th October 2010
• Revision 2: published 3 weeks ago

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