Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36
Chrome 66
Mac OS X 10.13.4
Desktop
6 years ago
Test name Executions per second
undefined 1569432.5 Ops/sec
typeof 5495391.0 Ops/sec
in 5063959.0 Ops/sec
hasOwnProperty 3963682.5 Ops/sec
bool 5354721.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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