Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15
Safari 12
Mac OS X 10.14.3
Desktop
4 years ago
Test name Executions per second
undefined 2438608.8 Ops/sec
typeof 8575481.0 Ops/sec
in 8519946.0 Ops/sec
hasOwnProperty 8299481.0 Ops/sec
bool 8409739.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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