Info

I was wondering why my tests took much more time than average.

Seal was adding more security… but more latency too.

Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    function thrower(){
        throw new Error('nope');
    }
    var frozenHandler = {
        set: thrower,
        defineProperty: thrower,
        delete: thrower
    }; 
  };
</script>

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

new(function Dummy(args) {
  this.foo = 'wont be foo';
  this.emptiness = [];
  this.mind_changer = false;
})({
  foo: 'will be foo',
  mind_changer: true
})

new(function Dummy(args) {
  this.foo = 'wont be foo';
  this.emptiness = [];
  this.mind_changer = false;

  Object.seal(this);
})({
  foo: 'will be foo',
  mind_changer: true
})

new(function Dummy(args) {
  this.foo = 'wont be foo';
  this.emptiness = [];
  this.mind_changer = false;

  Object.freeze(this);
})({
  foo: 'will be foo',
  mind_changer: true
})

new(function Dummy(args) {
  this.foo = 'wont be foo';
  this.emptiness = [];
  this.mind_changer = false;

  return new Proxy(this, frozenHandler);
})({
  foo: 'will be foo',
  mind_changer: true
})

Compare results of other browsers

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 Oncle Tom on 27th December 2012
• Revision 2: published by David Bruant on 13th February 2013

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