How to check if an element has a class in JavaScript

In this tutorial, we will learn how to check if an HTML element has a particular class or not using JavaScript.

classList.contains() method

We can use the classList.contains() method to check if an element has a class name or not.

The classList.contains() method returns true if a class name is found else it returns false (if a class name is not found).

Example:

<div class="box" id="first">  <h1>Hello happy people</h1>
</div>

const div = document.getElementById('first');

div.classList.contains('box'); // true
div.classList.contains('orange'); // false