JavaScript Array.isArray()
Examples
Check if an object is an array:
const fruits = ["Banana", "Orange", "Apple", "Mango"];
let result = Array.isArray(fruits);
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Check if another datatype is an array:
let text = "W3Schools";
let result = Array.isArray(text);
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Definition and Usage
The isArray() method returns true
if an object is an array, otherwise false.
Array.isArray()
Array.isArray() is a static property of the JavaScript Array object.
You can only use it as Array.isArray().
Using x.isArray(), where x is an array will return undefined.
Syntax
Array.isArray(obj)
Parameters
| Parameter | Description |
| obj | Required. An object (or any data type) to be tested. |
Return Value
| Type | Description |
| A boolean |
true if the object is an array, otherwise false. |
Browser Support
isArray() is an ECMAScript5 (ES5) feature.
ES5 (JavaScript 2009) fully supported in all browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | 9-11 |
