delete vs undefined vs null

JavaScript performance comparison

Revision 23 of this test case created by Dan

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  function O() {};
  O.prototype = {
    p: null
  };
  
  var o = new O();
  o.p = 1;

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Delete
 delete o.p;
pending…
Set to False
 o.p = false;
pending…
Set to Zero
o.p = 0;
pending…
Set to Null
 o.p = null;
pending…
Set to Undefined
 o.p = undefined;
pending…
Set to void 0
o.p = void 0;
pending…

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Revisions

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