Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36
Chrome 108
Mac OS X 10.15.7
Desktop
one year ago
Test name Executions per second
undefined 6320590.5 Ops/sec
typeof 17565236.0 Ops/sec
in 17557088.0 Ops/sec
hasOwnProperty 14982140.0 Ops/sec
bool 18056230.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool