How to find an element based on a data-attribute value in jQuery?

jQuery Web Development Front End Technology

To find an element based on a data-attribute value using jQuery is quite easy.

Example

You can try to run the following code to learn how to find an element based on a data-attribute value using jQuery:

<!DOCTYPE html>
<html>
<head>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
   $(document).ready(function() {
      $('[data-slide="2"]').addClass('demo');
   });
</script>
<style>
.demo {
    font-size: 200%;
    color: green;
}
</style>
</head>
<body>

<p data-slide="1">One</p>
<p data-slide="2">Two</p>
<p data-slide="3">Three</p>

</body>
</html>