<html>
<body>
<ul id="myList"><li>Coffee</li><li>Tea</li></ul>
<p id="demo">Click the button to append an item to the list</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction()
{
var node=document.createElement("LI");
var textnode=document.createTextNode("Water");
node.appendChild(textnode);
document.getElementById("myList").appendChild(node);
}
</script>
<p><strong>Note:</strong><br>First create an LI node,<br> then create a Text node,<br> then append the Text node to the LI node.<br>Finally append the LI node to the list.</p>
</body>
</html>