Run details:
Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Chrome 99
Windows 7
Desktop
2 years ago
Test name Executions per second
undefined 3163423.5 Ops/sec
typeof 8198372.0 Ops/sec
in 8267620.5 Ops/sec
hasOwnProperty 7624095.0 Ops/sec
bool 8534191.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


;