Add active class onclick javascript
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
.active {
padding: 5px;
background-color: #20BF55;
color: white;
}
</style>
</head>
<body>
<div id="text" onclick="makeActive()">
Click to make Active
</div>
<script>
function makeActive() {
var element = document.getElementById("text");
element.classList.add("active");
element.innerHTML="This is Active";
}
</script>
</body>
</html>