Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36
Chrome 65
Mac OS X 10.12.6
Other
6 years ago
Test name Executions per second
undefined 4395457.0 Ops/sec
typeof 14468601.0 Ops/sec
in 13465473.0 Ops/sec
hasOwnProperty 13336568.0 Ops/sec
bool 14841433.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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