Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.80 Safari/537.36 Edg/98.0.1108.43
Chrome 98
Linux
Desktop
2 years ago
Test name Executions per second
undefined 6561431.0 Ops/sec
typeof 19633692.0 Ops/sec
in 19822922.0 Ops/sec
hasOwnProperty 17719788.0 Ops/sec
bool 15564644.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool