Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/71.0.3578.80 Chrome/71.0.3578.80 Safari/537.36
Chromium 71
Ubuntu
Desktop
6 years ago
Test name Executions per second
undefined 2642205.8 Ops/sec
typeof 8285162.0 Ops/sec
in 7854764.5 Ops/sec
hasOwnProperty 7617050.0 Ops/sec
bool 8315199.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool