Change Class of HTML Tag Using JQuery

In this tutorial we will see how to Change Class of HTML Tag Using JQuery. The jQuery removeClass() and addClass() methods are used for this purpose.

HTML Code

HTML Code is given below, This code contains HTML paragraph element and a button element.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Change Class of HTML Tag Using JQuery</title>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
</head>
<body>
<p class="one" id="main">Change my Class using JQuery!</p>
<button>Change Class</button>   
</body>
</html>

jQuery removeClass() Method

The jQuery removeClass() Method is used to remove one or more classes from the selected HTML element.

If class name is not defined, this method will remove all classes of the targeted html element.

jQuery addClass() Method

The jQuery addClass() Method is used to add one or more classes to the selected html element.

This method doesn't remove the existing class from the html element, it simply adds more classes.

JQuery Code

JQuery Code is given below, In this code jQuery removeClass() Method will remove the previous class from the paragraph element. Then the jQuery addClass() Method will add the new class to the paragraph element.

This is done on click event, which occurs when the button is clicked.

Take a look at the code given below.

<script>
$( "button" ).click(function() {
  $('#main').removeClass('one').addClass('two');
});
</script>

Demo

Video Tutorial

Watch video tutorial on how to Change Class of HTML Tag Using JQuery.

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