Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36
Chrome 104
Windows
Desktop
2 years ago
Test name Executions per second
undefined 4075817.8 Ops/sec
typeof 11531394.0 Ops/sec
in 11709722.0 Ops/sec
hasOwnProperty 10206232.0 Ops/sec
bool 11378540.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool