×

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>
<style>
.mystyle {
  width: 300px;
  height: 50px;
  text-align: center;
  background-color: coral;
  color: white;
  margin-bottom: 10px;
}
</style>
</head>
<body>
​
<p>In this example, we first search for the element in the document with id="myDIV". Then, if this element has a class of "mystyle" - change its font size.</p>
​
<div id="myDIV" class="mystyle">
I am a DIV element
</div>
​
<button onclick="myFunction()">Try it</button>
​
<script>
function myFunction() {
  var x = document.getElementById("myDIV");
  
  if (x.className === "mystyle") { 
    x.style.fontSize = "30px";
  }
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_element_classname6 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:02:18 GMT -->
</html>
​
×

Report a Problem: