Run details:
Mozilla/5.0 (Linux; Android 10; Redmi Note 8 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Mobile Safari/537.36
Chrome Mobile 87
Android
Mobile
3 years ago
Test name Executions per second
undefined 1697533.1 Ops/sec
typeof 4759957.0 Ops/sec
in 4748912.5 Ops/sec
hasOwnProperty 4381223.0 Ops/sec
bool 4738824.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool