Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36
Chrome 96
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
undefined 9459210.0 Ops/sec
typeof 26690576.0 Ops/sec
in 26722674.0 Ops/sec
hasOwnProperty 23087082.0 Ops/sec
bool 26686950.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool