Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:82.0) Gecko/20100101 Firefox/82.0
Firefox 82
Ubuntu
Desktop
4 years ago
Test name Executions per second
undefined 102292688.0 Ops/sec
typeof 196483184.0 Ops/sec
in 114575704.0 Ops/sec
hasOwnProperty 138337296.0 Ops/sec
bool 195988640.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool