Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:95.0) Gecko/20100101 Firefox/95.0
Firefox 95
Mac OS X 10.15
Desktop
3 years ago
Test name Executions per second
undefined 859066240.0 Ops/sec
typeof 922846464.0 Ops/sec
in 900081792.0 Ops/sec
hasOwnProperty 891755584.0 Ops/sec
bool 859496000.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool