Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
Firefox 102
Windows
Desktop
2 years ago
Test name Executions per second
undefined 938792448.0 Ops/sec
typeof 936959168.0 Ops/sec
in 943026304.0 Ops/sec
hasOwnProperty 942122816.0 Ops/sec
bool 935485632.0 Ops/sec
Object.prototype.hasOwnProperty 974018.1 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • Object.prototype.hasOwnProperty