Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Chrome 120
Windows
Desktop
11 months ago
Test name Executions per second
undefined 15304179.0 Ops/sec
typeof 40159040.0 Ops/sec
in 40345960.0 Ops/sec
hasOwnProperty 36344592.0 Ops/sec
bool 40391788.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool