Run details:
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36
Chrome 89
Windows 7
Desktop
3 years ago
Test name Executions per second
undefined 1080216.4 Ops/sec
typeof 3008406.2 Ops/sec
in 2995836.5 Ops/sec
hasOwnProperty 2730482.8 Ops/sec
bool 3018390.8 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool