Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36 FirePHP/4Chrome
Chrome 68
Mac OS X 10.13.6
Desktop
6 years ago
Test name Executions per second
undefined 1980451.5 Ops/sec
typeof 7374666.0 Ops/sec
in 6600084.5 Ops/sec
hasOwnProperty 6775471.5 Ops/sec
bool 7413168.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool