Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0
Firefox 85
Windows
Desktop
3 years ago
Test name Executions per second
undefined 579073344.0 Ops/sec
typeof 636359872.0 Ops/sec
in 593612736.0 Ops/sec
hasOwnProperty 629806528.0 Ops/sec
bool 700593408.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool