Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36
Chrome 92
Linux
Desktop
3 years ago
Test name Executions per second
undefined 2720719.2 Ops/sec
typeof 7970280.0 Ops/sec
in 7982656.5 Ops/sec
hasOwnProperty 7180081.5 Ops/sec
bool 8127371.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool