×

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
x
 
<!DOCTYPE html>
<html>
<head>
<style>
.myClass::after {
  content: " But you already knew that.";
}
</style>
</head>
<body>
<h1>Change content property with JavaScript</h1>
<p>You can not style a pseudo-class on a particular element, but you can get the same result by creating a class in your STYLE section (or stylesheet) and add that class to the specified element.</p>
<p>Click the "Try it" button to add the class "myClass" to the DIV element:</p>
<button onclick="myFunction()">Try it</button>
<div id="myDIV">This is my DIV element.</div>
<script>
function myFunction() {
  document.getElementById("myDIV").className += " myClass";
}
</script>
</body>
<!-- Mirrored from www.w3schools.com/cssref/tryit.asp?filename=trycss_js_content by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:00:46 GMT -->
</html>
×

Report a Problem: