undefined vs. typeof vs. in vs. hasOwnPropertyjjj (version: 0)

Object lookup performance

Comparing performance of: undefined vs typeof vs in vs hasOwnProperty vs bool

Created: 2 years ago by: Guest
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Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    undefined
    typeof
    in
    hasOwnProperty
    bool

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 2 years ago)
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36
Chrome 121 on Windows
View result in a separate tab
Test name Executions per second
undefined 7440731.0 Ops/sec
typeof 20021340.0 Ops/sec
in 20244816.0 Ops/sec
hasOwnProperty 18133332.0 Ops/sec
bool 19194742.0 Ops/sec
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