delete vs undefined vs null

JavaScript performance comparison

Revision 87 of this test case created by Svyatoslav Nazarov

Preparation code


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

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
object.property = null
o.p = null;
pending…
object["property"] = false
o["p"] = false;
pending…
object.property = undefined
o.p = undefined;
pending…
delete object.property
delete o.p;
pending…
object.property = false
o.p = false;
pending…
omit
_.omit(o, "p")
pending…
delete object["property"]
delete o["p"];
pending…

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