Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/83.0.4103.61 Chrome/83.0.4103.61 Safari/537.36
Chromium 83
Ubuntu
Desktop
4 years ago
Test name Executions per second
undefined 4346170.0 Ops/sec
typeof 12271916.0 Ops/sec
in 12706770.0 Ops/sec
hasOwnProperty 9973581.0 Ops/sec
bool 12211638.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool