Info

The test is to see the performance difference in call vs apply when using inheritance in Javascript to call a superclass's function.

Preparation code

<script>
  function SuperClass(a, b, c) {};
  SuperClass.prototype = {
    constructor: SuperClass
  };

  function CallClass() {
    SuperClass.prototype.constructor.call(this, true, 2, "three");
  }

  function ApplyClass() {
    SuperClass.prototype.constructor.apply(this, [true, 2, "three"]);
  }

  function ApplyWithArgumentsClass() {
    SuperClass.prototype.constructor.apply(this, arguments);
  }
</script>

Test runner

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var callInstance = new CallClass();

var applyInstance = new ApplyClass();

var applyWithArgsInstance = new ApplyWithArgumentsClass(true, 2, "three");

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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 Shane Tomlinson on 21st December 2010
• Revision 3: published on 2nd February 2012

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