Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.80 Safari/537.36 Edg/98.0.1108.43
Chrome 98
Windows
Desktop
2 years ago
Test name Executions per second
undefined 2434147.2 Ops/sec
typeof 7113719.5 Ops/sec
in 7202219.0 Ops/sec
hasOwnProperty 5794123.5 Ops/sec
bool 5736364.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool