Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36
Chrome 107
Windows
Desktop
2 years ago
Test name Executions per second
undefined 6069831.0 Ops/sec
typeof 17775064.0 Ops/sec
in 17866558.0 Ops/sec
hasOwnProperty 16288863.0 Ops/sec
bool 17752916.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool