Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36
Chrome 128
Windows
Desktop
3 months ago
Test name Executions per second
undefined 6535722.5 Ops/sec
typeof 16869846.0 Ops/sec
in 16281791.0 Ops/sec
hasOwnProperty 15424825.0 Ops/sec
bool 16349227.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool