Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4715.0 Safari/537.36
Chrome 98
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
undefined 5161229.0 Ops/sec
typeof 13271855.0 Ops/sec
in 13275812.0 Ops/sec
hasOwnProperty 11815406.0 Ops/sec
bool 13473877.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool