delete vs undefined vs null

JavaScript performance comparison

Revision 48 of this test case created by liene

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var o = {
    p: [1, 2, 3]
  };

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
object.property = null
 o.p[0] = null;
pending…
object.property = undefined
 o.p[0] = undefined;
pending…
delete object.property
 delete o.p[0];
pending…

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