×

Save Your Code

If you click the save button, your code will be saved, and you get an URL you can share with others.

By clicking the "Save" button you agree to our terms and conditions.

Report Error

×

Save to Google Drive

If you have a Google account, you can save this code to your Google Drive.

Google will ask you to confirm Google Drive access.

×

Open from Google Drive

If you have saved a file to Google Drive, you can open it here:

Result Size: 625 x 571
×
Change Orientation Save Code Save to Google DriveSave to Google Drive Load from Google DriveLoad from Google Drive Change Theme, Dark/Light
​x
 
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
.mystyle {
  width: 100%;
  padding: 25px;
  background-color: coral;
  color: white;
  font-size: 25px;
  box-sizing: border-box;
}
</style>
</head>
<body>
​
<p>Click the "Try it" button to add the "mystyle" class to the DIV element:</p>
​
<button onclick="myFunction()">Try it</button>
​
<div id="myDIV">
This is a DIV element.
</div>
​
<script>
function myFunction() {
   var element = document.getElementById("myDIV");
   element.classList.add("mystyle");
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/howto/tryit.asp?filename=tryhow_js_add_class by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:38:50 GMT -->
</html>
​
​
×

Report a Problem: