Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.2 Safari/605.1.15
Safari 12
Mac OS X 10.13.6
Desktop
5 years ago
Test name Executions per second
undefined 3317476.0 Ops/sec
typeof 9761285.0 Ops/sec
in 9771992.0 Ops/sec
hasOwnProperty 9748594.0 Ops/sec
bool 9796738.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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