Run details:
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36
Chrome 74
Windows 7
Desktop
5 years ago
Test name Executions per second
undefined 2450463.5 Ops/sec
typeof 6818194.0 Ops/sec
in 6356742.0 Ops/sec
hasOwnProperty 5885700.5 Ops/sec
bool 6745606.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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