JavaScript Array.isArray()

Check if an object is an array:

const fruits = ["Banana", "Orange", "Apple", "Mango"];
let result = Array.isArray(fruits);

Check if another datatype is an array:

let text = "91xjr";
let result = Array.isArray(text);

Description

The isArray() method returns true if an object is an array, otherwise false.

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.

Array.isArray (obj)

Parameter	Description
obj	Required. An object (or any data type) to be tested.

Type	Description
A boolean	`true` if the object is an array, otherwise `false`.

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