Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:82.0) Gecko/20100101 Firefox/82.0
Firefox 82
Mac OS X 10.15
Desktop
4 years ago
Test name Executions per second
undefined 128531488.0 Ops/sec
typeof 241675648.0 Ops/sec
in 159865760.0 Ops/sec
hasOwnProperty 174576864.0 Ops/sec
bool 245750624.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


;