Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36
Chrome 75
Mac OS X 10.14.5
Desktop
5 years ago
Test name Executions per second
undefined 5237988.0 Ops/sec
typeof 14639427.0 Ops/sec
in 14451410.0 Ops/sec
hasOwnProperty 12754330.0 Ops/sec
bool 14149793.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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