Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:83.0) Gecko/20100101 Firefox/83.0
Firefox 83
Ubuntu
Desktop
4 years ago
Test name Executions per second
undefined 446405760.0 Ops/sec
typeof 446303904.0 Ops/sec
in 447631200.0 Ops/sec
hasOwnProperty 447865952.0 Ops/sec
bool 447395936.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool