Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36
Chrome 100
Mac OS X 10.15.7
Desktop
2 years ago
Test name Executions per second
undefined 5253461.0 Ops/sec
typeof 16090844.0 Ops/sec
in 16736573.0 Ops/sec
hasOwnProperty 14254577.0 Ops/sec
bool 16729047.0 Ops/sec
Object.prototype.hasOwnProperty 2939298.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • Object.prototype.hasOwnProperty