Source Code: (back to article)
<!DOCTYPE HTML>
<html>
<head>
<title>Title of the document</title>
</head>
<body>
<div id="test" class="myClass">Welcome to W3Docs</div>
<script>
function hasClass(element, clsName) {
return(' ' + element.className + ' ').indexOf(' ' + clsName + ' ') > -1;
}
let val1 = document.getElementById('test');
alert(hasClass(val1, 'myClass'));
</script>
</body>
</html>