Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36
Chrome 87
Windows
Desktop
3 years ago
Test name Executions per second
undefined 3881033.8 Ops/sec
typeof 10455832.0 Ops/sec
in 10475156.0 Ops/sec
hasOwnProperty 9677996.0 Ops/sec
bool 10457430.0 Ops/sec
Object.prototype.hasOwnProperty 2175463.8 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • Object.prototype.hasOwnProperty


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