Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36 Edg/107.0.1418.42
Chrome 107
Windows
Desktop
2 years ago
Test name Executions per second
undefined 3599309.0 Ops/sec
typeof 10298358.0 Ops/sec
in 11121256.0 Ops/sec
hasOwnProperty 9872518.0 Ops/sec
bool 9930310.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool