Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.143 YaBrowser/22.5.0.1916 Yowser/2.5 Safari/537.36
Yandex Browser 22
Mac OS X 10.15.7
Desktop
2 years ago
Test name Executions per second
undefined 3995045.5 Ops/sec
typeof 14333601.0 Ops/sec
in 14399795.0 Ops/sec
hasOwnProperty 12595400.0 Ops/sec
bool 14267970.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool