Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36
Chrome 109
Linux
Desktop
one year ago
Test name Executions per second
undefined 2683108.0 Ops/sec
typeof 9052033.0 Ops/sec
in 9104192.0 Ops/sec
hasOwnProperty 7978232.5 Ops/sec
bool 9006369.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool