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
Chrome 109
Windows
Desktop
one year ago
Test name Executions per second
undefined 10480330.0 Ops/sec
typeof 28387590.0 Ops/sec
in 27968590.0 Ops/sec
hasOwnProperty 25427990.0 Ops/sec
bool 28037380.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool