Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0
Firefox 91
Ubuntu
Desktop
3 years ago
Test name Executions per second
undefined 1583130112.0 Ops/sec
typeof 1591811584.0 Ops/sec
in 1575257344.0 Ops/sec
hasOwnProperty 1548340224.0 Ops/sec
bool 1600269824.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool