Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36
Chrome 96
Linux
Desktop
3 years ago
Test name Executions per second
undefined 4259227.5 Ops/sec
typeof 12159167.0 Ops/sec
in 12166151.0 Ops/sec
hasOwnProperty 11273893.0 Ops/sec
bool 12331118.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool