Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36
Chrome 125
Windows
Desktop
7 months ago
Test name Executions per second
undefined 8907869.0 Ops/sec
typeof 22756090.0 Ops/sec
in 21773524.0 Ops/sec
hasOwnProperty 21059462.0 Ops/sec
bool 22602428.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool