isArray() – Check if given Value is an Array

Array.isArray(value)

• Array is Array class
• value is an object which has to be checked

isArray() is a static method of Array class. therefore we can call this method directly using Array class name

isArray() method checks if the given value is an array

if given value is an array object, then isArray() returns true, else it returns false

Examples

1. check if given value is array [positive scenario]

const value = [2, 5, 8, 10];

if ( Array.isArray(value) ) {
    console.log('given value is an array');
} else {
    console.log('given value is not an array');
}

2. check if given value is array [negative scenario]

const value = 'apple';

if ( Array.isArray(value) ) {
    console.log('given value is an array');
} else {
    console.log('given value is not an array');
}