Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • double bang

  • exists

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    undefined
    typeof
    in
    hasOwnProperty
    double bang
    exists

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: one year ago)
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/119.0
Firefox 119 on Mac OS X 10.15
View result in a separate tab
Test name Executions per second
undefined 798379776.0 Ops/sec
typeof 813430528.0 Ops/sec
in 799115264.0 Ops/sec
hasOwnProperty 808549824.0 Ops/sec
double bang 809473792.0 Ops/sec
exists 809339840.0 Ops/sec