how to change attribute in css code example
Example 1: how to change style of an element using javascript
<html>
<body>
<p id="p2">Hello World!</p>
<script>
document.getElementById("p2").style.color = "blue";
</script>
<p>The paragraph above was changed by a script.</p>
</body>
</html>
Example 2: add css in javascript
document.getElementById("demo").style.display = "none";