Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:84.0) Gecko/20100101 Firefox/84.0
Firefox 84
Windows
Desktop
3 years ago
Test name Executions per second
undefined 313167648.0 Ops/sec
typeof 327207168.0 Ops/sec
in 262607904.0 Ops/sec
hasOwnProperty 294678976.0 Ops/sec
bool 309898464.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool