Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36 Edg/109.0.1518.52
Chrome 109
Windows
Desktop
one year ago
Test name Executions per second
undefined 7503169.0 Ops/sec
typeof 21146050.0 Ops/sec
in 21725160.0 Ops/sec
hasOwnProperty 20193808.0 Ops/sec
bool 21610506.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool