JavaScript Array includes() method

Last Updated : 17 Mar 2025

The JavaScript array includes() method checks whether the given array contains the specified element. It returns true if an array contains the element, otherwise false.

Syntax

The includes() method is represented by the following syntax:

Parameter

element - The value to be searched.

start - It is optional. It represents the index from where the method starts search.

Return

A Boolean value.

JavaScript Array includes() method example

Here, we will understand includes() method through various examples.

Example 1

Let's see a simple example to determine whether the given array contains the specified element.

Output:

Example 2

In this example, we will provide the index from where the search starts.

Output:

Example 3

Let's see one more example to determine whether the includes() method is case-sensitive.

Output: