MeasureThat.net

Run results for: isArray vs optional length 2

Array.isArray vs array?.length > 0

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36
Chrome 116
Windows
Desktop
one year ago
Test name Executions per second
Check Array.isArray([]) 20087398.0 Ops/sec
Check object?.length 20156962.0 Ops/sec
Check Array.isArray(null) 20272248.0 Ops/sec
Check null?.length 20398552.0 Ops/sec
Script Preparation code:
Tests:

  • Check Array.isArray([])

  • Check object?.length

  • Check Array.isArray(null)

  • Check null?.length

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