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 JS array emptiness check (version: 0)

Comparing the performance of array.length and typeof array[0] === "undefined"

Comparing performance of: typeof vs array.length

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

  • typeof

  • array.length

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    typeof
    array.length

    Fastest: N/A

    Slowest: N/A

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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/93.0.4577.63 Safari/537.36 Edg/93.0.961.47
Chrome 93 on Windows
View result in a separate tab
Test name Executions per second
typeof 8939879.0 Ops/sec
array.length 8691131.0 Ops/sec