JavaScript Array.isArray()
Examples
Check if an object is an array:
const fruits = ["Banana", "Orange", "Apple", "Mango"];
let result = Array.isArray(fruits);
Try it Yourself »
Check if another datatype is an array:
let text = "W3Schools";
let result = Array.isArray(text);
Try it Yourself »
Description
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. |
Array Tutorials:
Browser Support
isArray() is an ECMAScript5 (ES5) feature.
ES5 (JavaScript 2009) is fully supported in all modern browsers since July 2013:
| Chrome 23 |
IE/Edge 11 |
Firefox 21 |
Safari 6 |
Opera 15 |
| Sep 2012 | Sep 2012 | Apr 2013 | Jul 2012 | Jul 2013 |
