Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0
Firefox 82
Windows
Desktop
4 years ago
Test name Executions per second
undefined 172450752.0 Ops/sec
typeof 391846784.0 Ops/sec
in 264342544.0 Ops/sec
hasOwnProperty 263495232.0 Ops/sec
bool 392571488.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool