Run details:
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0
Firefox 86
Windows 7
Desktop
3 years ago
Test name Executions per second
undefined 662865600.0 Ops/sec
typeof 670256832.0 Ops/sec
in 663131072.0 Ops/sec
hasOwnProperty 669435840.0 Ops/sec
bool 663400320.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool