isArray? (version: 1)

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray#instanceof_vs._array.isarray

Comparing performance of: Array.isArray vs instanceof vs constructor vs Object.getPrototypeOf vs Object.prototype.toString

Created: 5 months ago by: Registered User
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Tests:

  • Array.isArray

  • instanceof

  • constructor

  • Object.getPrototypeOf

  • Object.prototype.toString

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    Array.isArray
    instanceof
    constructor
    Object.getPrototypeOf
    Object.prototype.toString

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 2 months ago)
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0
Firefox 147 on Windows
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Test name Executions per second
Array.isArray 142717072.0 Ops/sec
instanceof 84672784.0 Ops/sec
constructor 1627838208.0 Ops/sec
Object.getPrototypeOf 75200704.0 Ops/sec
Object.prototype.toString 77374032.0 Ops/sec
Related benchmarks: