×

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>
<title>W3.JS</title>
<style>
.marked {
    color: red;
}
</style>
<script src="../lib/w3.js"></script>
<body>
​
<h2>Testing W3.JS with CSS</h2>
​
<p>Click the button to toggle the "marked" class of all h2 elements.</p>
​
<p>
<button onclick="w3.toggleClass('h2','marked')">Toggle Class</button>
</p>
​
<div id="London" class="city">
  <h2>London</h2>
  <p>London is the capital city of England.</p>
</div>
​
<div id="Paris" class="city">
  <h2>Paris</h2>
  <p>Paris is the capital of France.</p> 
</div>
​
<div id="Tokyo" class="city">
  <h2>Tokyo</h2>
  <p>Tokyo is the capital of Japan.</p>
</div>
​
</body>
​
<!-- Mirrored from www.w3schools.com/w3js/tryit.asp?filename=tryw3js_toggle_class_tag by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:29:20 GMT -->
</html>
​
×

Report a Problem: