Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 14_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0 Mobile/15E148 Safari/604.1
Mobile Safari 14
iOS 14.1
Mobile
2 years ago
Test name Executions per second
undefined 5420304.5 Ops/sec
typeof 17024148.0 Ops/sec
in 16963948.0 Ops/sec
hasOwnProperty 16764519.0 Ops/sec
bool 16206434.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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