Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0
Firefox 84
Ubuntu
Desktop
3 years ago
Test name Executions per second
undefined 729676160.0 Ops/sec
typeof 768187904.0 Ops/sec
in 760391808.0 Ops/sec
hasOwnProperty 588870464.0 Ops/sec
bool 699502720.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool