Nov 28, 2016 · Use element.classList.add to add a class: element.classList.add("my-class"); And element.classList.remove to remove a class: element.classList.remove("my-class"); If you need to support Internet Explorer 9 or lower: Add a space plus the name of your new class to the className property of the element.

Learn how to add a class name to an element with JavaScript. Click the button to add a class to me! Add a class name to the div element with id="myDIV" (in this example we use a button to add the class). This is a DIV element. Style the specified class name: Get the <div> element with id="myDIV" and add the "mystyle" class to it:

Jul 12, 2009 · 3 ways to add a class to a DOM element in JavaScript. There are multiple ways of doing this. I will show you three ways to add classes and clarify some benefits of each way. You can use any given method to add a class to your element, another way to …

Jan 10, 2025 · In JavaScript, adding a class name to an element allows you to style or manipulate it via CSS or JavaScript. This can be achieved using different methods. Here, we’ll explore two common approaches: using the .className property and the .add() method .

Home » Add a Class to an Element. To add a class to an element, you use the classList property of the element. Suppose you have an element as follows: To add the box class to the <div> element, you use the following: It’s possible to add multiple classes. The following adds three classes to the <div> element: Was this tutorial helpful ?

Dec 20, 2012 · You can add class to html elements like this: $(".divclass").find("p,h1,h2,h3,figure,span,a").addClass('nameclassorid'); nameclassorid no point or # at the beginning

Mar 17, 2025 · In JavaScript, there are some approaches to add a class to an element. We can use the .className property or the .add() method to add a class name to the particular element. Now, let's discuss the approaches to add a class to an element.

From the example above, keep a note of the following parameter conditions: classname: This is required as it specifies the class names (one or more) to be added. function (index, currentclass): This is an optional function because the index returns the index position, while currentclass returns the class name (current) of the element. – The .className Property

Adding a class to an element in JavaScript is easy and can be done using the modern classList.add() method, which is the recommended approach. This method ensures that classes are added efficiently and safely without duplicating existing classes.

Apr 27, 2020 · Adding a class to an HTML element is simple when using JavaScript’s classList property method, add(). First, we take a quick look at the generic formula — and follow up with a practical example. Find target element. Then add specified class to target element.