Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36
Chrome 105
Windows
Desktop
2 years ago
Test name Executions per second
undefined 8590701.0 Ops/sec
typeof 24886626.0 Ops/sec
in 24769964.0 Ops/sec
hasOwnProperty 22505374.0 Ops/sec
bool 24889138.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool