delete vs undefined vs null

JavaScript performance comparison

Revision 85 of this test case created by Jett Teixeira

Preparation code


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

};
</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…
newObj
let obj = {
   q: o.q,
}
pending…
object.property = null
o.p = null;
pending…
delete object["property"]
delete o["p"];
pending…
Spread
let obj;
const { p:_tmp, ...obj} = o;
pending…
delete object.property
delete o.p;
pending…
object.property = undefined
o.p = undefined;
pending…
object["property"] = false
o["p"] = false;
pending…

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