Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.97 Safari/537.36
Chrome 78
Windows
Desktop
4 years ago
Test name Executions per second
undefined 3175655.0 Ops/sec
typeof 8193326.0 Ops/sec
in 8534956.0 Ops/sec
hasOwnProperty 7172323.5 Ops/sec
bool 6641926.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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