Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.71 Safari/537.36
Chrome 94
Linux
Desktop
3 years ago
Test name Executions per second
undefined 3928581.2 Ops/sec
typeof 10883928.0 Ops/sec
in 10940133.0 Ops/sec
hasOwnProperty 9895071.0 Ops/sec
bool 10939471.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool