Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36
Chrome 104
Mac OS X 10.15.7
Desktop
2 years ago
Test name Executions per second
undefined 9918652.0 Ops/sec
typeof 27222466.0 Ops/sec
in 27486800.0 Ops/sec
hasOwnProperty 23998658.0 Ops/sec
bool 27411432.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool