Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36
Chrome 78
Windows
Desktop
4 years ago
Test name Executions per second
undefined 3332628.8 Ops/sec
typeof 9414373.0 Ops/sec
in 9403065.0 Ops/sec
hasOwnProperty 7821605.5 Ops/sec
bool 8378716.0 Ops/sec
Undefined2 3393731.2 Ops/sec
undefined3 3363590.5 Ops/sec
undefined4 3359387.8 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • Undefined2

  • undefined3

  • undefined4


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