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Run results for:
isArray?
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray#instanceof_vs._array.isarray
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=625550" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0
Browser:
Firefox 147
Operating system:
Windows
Device Platform:
Desktop
Date tested:
5 months ago
constructor
1627.8M/s
Array.isArray
142.7M/s
instanceof
84.7M/s
Object.prototype.toString
77.4M/s
Object.getPrototypeOf
75.2M/s
View exact numbers
Test name
Executions per second
✓
constructor
1,627,838,208 Ops/sec
Array.isArray
142,717,072 Ops/sec
instanceof
84,672,784 Ops/sec
Object.prototype.toString
77,374,032 Ops/sec
Object.getPrototypeOf
75,200,704 Ops/sec
Tests:
Array.isArray
Array.isArray([])
instanceof
[] instanceof Array
constructor
[].constructor === Array
Object.getPrototypeOf
Object.getPrototypeOf([]) === Array.prototype
Object.prototype.toString
Object.prototype.toString.call([]) === "[object Array]"