Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36 Edg/107.0.1418.56
Chrome 107
Windows
Desktop
one year ago
Test name Executions per second
undefined 1394317.1 Ops/sec
typeof 3667113.8 Ops/sec
in 2560389.5 Ops/sec
hasOwnProperty 4023768.0 Ops/sec
bool 5294268.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool