Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36
Chrome 69
Mac OS X 10.13.3
Desktop
6 years ago
Test name Executions per second
undefined 4452046.0 Ops/sec
typeof 15105930.0 Ops/sec
in 14229091.0 Ops/sec
hasOwnProperty 13700487.0 Ops/sec
bool 15173163.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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