Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36
Chrome 73
Mac OS X 10.14.4
Desktop
5 years ago
Test name Executions per second
undefined 4208964.0 Ops/sec
typeof 12444895.0 Ops/sec
in 11430308.0 Ops/sec
hasOwnProperty 11067990.0 Ops/sec
bool 12251799.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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