Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36
Chrome 110
Windows
Desktop
one year ago
Test name Executions per second
undefined 11527540.0 Ops/sec
typeof 32657958.0 Ops/sec
in 32376932.0 Ops/sec
hasOwnProperty 29258910.0 Ops/sec
bool 32129466.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool