Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Chrome 131
Mac OS X 10.15.7
Desktop
23 days ago
Test name Executions per second
undefined 139513952.0 Ops/sec
typeof 139539792.0 Ops/sec
in 142961456.0 Ops/sec
hasOwnProperty 89897816.0 Ops/sec
bool 142085152.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool