Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Chrome 71
Mac OS X 10.14.1
Desktop
5 years ago
Test name Executions per second
undefined 5196214.5 Ops/sec
typeof 17055226.0 Ops/sec
in 15767399.0 Ops/sec
hasOwnProperty 15400730.0 Ops/sec
bool 16847630.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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