Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36
Chrome 98
Mac OS X 10.13.6
Desktop
2 years ago
Test name Executions per second
undefined 3191713.5 Ops/sec
typeof 8634271.0 Ops/sec
in 8743092.0 Ops/sec
hasOwnProperty 7882080.0 Ops/sec
bool 8765596.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool