How To Add A Class Name To An Element With JavaScript?

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How to add a class name to an element with JavaScript? JavascriptWeb DevelopmentObject Oriented Programming

To add a class name to an element with JavaScript, the code is as follows −

Example

 Live Demo

<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style>    .newStyle {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;       width: 100%;       padding: 25px;       background-color: rgb(147, 80, 255);       color: white;       font-size: 25px;       box-sizing: border-box;       text-align: center;    } </style> </head> <body> <h1>Adding className with JavaScript Example</h1> <button class="btn">Click here</button> <h2>Click the above button to add className to below div</h2> <div id="sampleDiv"> This is a DIV element. </div> <script>    document.querySelector(".btn").addEventListener("click", addClassName);    function addClassName() {       var element = document.getElementById("sampleDiv");       element.classList.add("newStyle");    } </script> </body> </html>

Output

The above code will produce the following output −

On clicking the “Click here” button −

AmitDiwan AmitDiwan Updated on: 2020-05-08T13:32:10+05:30

462 Views

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Tag » Add Classname To Element Javascript