Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36 OPR/79.0.4143.72
Opera 79
Windows
Desktop
3 years ago
Test name Executions per second
undefined 3517828.0 Ops/sec
typeof 9074958.0 Ops/sec
in 9327815.0 Ops/sec
hasOwnProperty 7943932.5 Ops/sec
bool 8080006.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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