Run details:
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36
Chrome 86
Windows 7
Desktop
3 years ago
Test name Executions per second
undefined 2483759.2 Ops/sec
typeof 6199100.5 Ops/sec
in 6875346.0 Ops/sec
hasOwnProperty 6172723.5 Ops/sec
bool 7377420.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


;