Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36
Chrome 83
Mac OS X 10.14.5
Desktop
4 years ago
Test name Executions per second
undefined 5031818.0 Ops/sec
typeof 15719097.0 Ops/sec
in 15803767.0 Ops/sec
hasOwnProperty 14209522.0 Ops/sec
bool 15608813.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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