Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4715.0 Safari/537.36
Chrome 98
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
undefined 5378014.0 Ops/sec
typeof 13727607.0 Ops/sec
in 13763600.0 Ops/sec
hasOwnProperty 11972961.0 Ops/sec
bool 13791844.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool