Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36
Chrome 80
Windows
Desktop
4 years ago
Test name Executions per second
undefined 3083778.2 Ops/sec
typeof 8219299.0 Ops/sec
in 9127079.0 Ops/sec
hasOwnProperty 7901327.5 Ops/sec
bool 7521962.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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