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 1242571392.0 Ops/sec
typeof 1227588608.0 Ops/sec
in 1214151680.0 Ops/sec
hasOwnProperty 1210288384.0 Ops/sec
bool 1215402752.0 Ops/sec
Object.prototype.hasOwnProperty 2374956.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • Object.prototype.hasOwnProperty