Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.82 Safari/537.36
Chrome 89
Windows
Desktop
3 years ago
Test name Executions per second
undefined 4838693.5 Ops/sec
typeof 13315345.0 Ops/sec
in 13521826.0 Ops/sec
hasOwnProperty 12297257.0 Ops/sec
bool 13495308.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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