Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Chrome 123
Windows
Desktop
8 months ago
Test name Executions per second
undefined 4186321.8 Ops/sec
typeof 10670501.0 Ops/sec
in 12374416.0 Ops/sec
hasOwnProperty 9928164.0 Ops/sec
bool 11259419.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool