Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:74.0) Gecko/20100101 Firefox/74.0
Firefox 74
Ubuntu
Desktop
4 years ago
Test name Executions per second
undefined 90410888.0 Ops/sec
typeof 174773584.0 Ops/sec
in 126314656.0 Ops/sec
hasOwnProperty 132207296.0 Ops/sec
double bang 178442304.0 Ops/sec
exists 178304704.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • double bang

  • exists


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