Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.1
Mobile Safari 16
iOS 16.7.5
Mobile
10 months ago
Test name Executions per second
undefined 1952559.8 Ops/sec
typeof 5960550.0 Ops/sec
in 5906280.5 Ops/sec
hasOwnProperty 5756778.5 Ops/sec
bool 5618466.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool