Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36
Chrome 89
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
undefined 5217709.0 Ops/sec
typeof 14986231.0 Ops/sec
in 12706109.0 Ops/sec
hasOwnProperty 12668843.0 Ops/sec
bool 14538220.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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