×

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>
.mystyle {
  width: 300px;
  height: 50px;
  background-color: coral;
  color: white;
  font-size: 25px;
}
</style>
</head>
<body>
<h2>Cross-browser solution for classList.contains()</h2>
<p>The classList property is not supported in Internet Explorer 9 and earlier.</p>
<p>In this example, we check if the browser supports the classList.contains() method. If not, the regular expression works as a fallback to achieve the same result (for IE 9 and earlier).</p>
<p>Click the button to find out if the DIV element has a "mystyle" class.</p>
<button onclick="myFunction()">Try it</button>
<div id="myDIV" class="mystyle">
I am a DIV element
</div>
<p id="demo"></p>
<script>
function myFunction() {
  var x = document.getElementById("myDIV");
  if (x.classList) {
    alert(x.classList.contains("mystyle"));
  } else {
    alert(/\bmystyle\b/g.test(x.className));
  }
}
</script>
</body>
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_element_classlist_contains_fallback by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:02:18 GMT -->
×

Report a Problem: