Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0 Safari/605.1.15
Safari 14
Mac OS X 10.15.7
Desktop
4 years ago
Test name Executions per second
undefined 4131901.5 Ops/sec
typeof 12389336.0 Ops/sec
in 12112195.0 Ops/sec
hasOwnProperty 12322893.0 Ops/sec
bool 12169699.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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