34 lines
1005 B
Markdown
34 lines
1005 B
Markdown
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---
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title: Array isArray
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---
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The `Array.isArray()` method returns `true` if an object is an array, `false` if it is not.
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## Syntax
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Array.isArray(obj)
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### Parameters
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**obj** The object to be checked.
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<a href='https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray' target='_blank' rel='nofollow'>MDN link</a> | <a href='https://msdn.microsoft.com/en-us/LIBRary/ff848265%28v=vs.94%29.aspx' target='_blank' rel='nofollow'>MSDN link</a>
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## Examples
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// all following calls return true
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Array.isArray([]);
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Array.isArray([1]);
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Array.isArray(new Array());
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// Little known fact: Array.prototype itself is an array:
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Array.isArray(Array.prototype);
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// all following calls return false
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Array.isArray();
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Array.isArray({});
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Array.isArray(null);
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Array.isArray(undefined);
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Array.isArray(17);
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Array.isArray('Array');
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Array.isArray(true);
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Array.isArray(false);
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Array.isArray({ __proto__: Array.prototype });
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