Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 13_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Mobile/15E148 Safari/604.1
Mobile Safari 13
iOS 13.4.1
Mobile
4 years ago
Test name Executions per second
undefined 2236074.5 Ops/sec
typeof 6295011.0 Ops/sec
in 6268893.0 Ops/sec
hasOwnProperty 6231085.5 Ops/sec
bool 6235034.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool