Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36
Chrome 91
Windows
Desktop
3 years ago
Test name Executions per second
undefined 2768426.8 Ops/sec
typeof 7959290.5 Ops/sec
in 8169748.0 Ops/sec
hasOwnProperty 7126101.0 Ops/sec
bool 7737061.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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