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
Chrome 107
Windows
Desktop
2 years ago
Test name Executions per second
undefined 5504790.0 Ops/sec
typeof 15776786.0 Ops/sec
in 16066072.0 Ops/sec
hasOwnProperty 14750439.0 Ops/sec
bool 16215523.0 Ops/sec
?. 15830268.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • ?.