Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.87 Safari/537.36
Chrome 78
Mac OS X 10.14.6
Desktop
4 years ago
Test name Executions per second
undefined 5041157.0 Ops/sec
typeof 14724202.0 Ops/sec
in 14604171.0 Ops/sec
hasOwnProperty 13434920.0 Ops/sec
bool 15691622.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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