Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36
Chrome 98
Mac OS X 10.15.7
Desktop
2 years ago
Test name Executions per second
undefined 5463032.5 Ops/sec
typeof 15877237.0 Ops/sec
in 15853212.0 Ops/sec
hasOwnProperty 13341661.0 Ops/sec
bool 15839798.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool