delete vs undefined vs null

JavaScript performance comparison

Revision 82 of this test case created by doron nahum

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"] = false
o["p"] = false;
pending…
new
const newCar = Object.keys(o).reduce((object, key) => {
  if (key !== 'p') {
    object[key] = o[key]
  }
  return object
}, {})
pending…
object.property = false
o.p = false;
pending…
delete object["property"]
delete o["p"];
pending…
object.property = undefined
o.p = undefined;
pending…
object.property = null
o.p = null;
pending…
delete object.property
delete o.p;
pending…

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