Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36
Chrome 114
Windows
Desktop
one year ago
Test name Executions per second
undefined 5649141.0 Ops/sec
typeof 15928287.0 Ops/sec
in 15966704.0 Ops/sec
hasOwnProperty 14308933.0 Ops/sec
bool 15891190.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool