Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3521.0 Safari/537.36
Chrome 70
Mac OS X 10.13.6
Desktop
6 years ago
Test name Executions per second
undefined 2855048.5 Ops/sec
typeof 8925024.0 Ops/sec
in 8527648.0 Ops/sec
hasOwnProperty 8376492.0 Ops/sec
double bang 9635924.0 Ops/sec
exists 9498572.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • double bang

  • exists


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