Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36
Chrome 98
Linux
Desktop
2 years ago
Test name Executions per second
undefined 5318891.0 Ops/sec
typeof 14198157.0 Ops/sec
in 14310714.0 Ops/sec
hasOwnProperty 13124040.0 Ops/sec
bool 13842472.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


;