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 881461248.0 Ops/sec
typeof 920838080.0 Ops/sec
in 948235712.0 Ops/sec
hasOwnProperty 956128448.0 Ops/sec
bool 954591744.0 Ops/sec
Object.prototype.hasOwnProperty 983945.4 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • Object.prototype.hasOwnProperty