To add a new element to the HTML DOM, we have to create it first and then we need to append it to the existing element.
Steps to follow
1) First, create a div section and add some text to it using <p> tags.
2) Create an element <p> using document.createElement("p").
3) Create a text, using document.createTextNode(), so as to insert it in the above-created element("p").
4) Using appendChild() try to append the created element, along with text, to the existing div tag.
Thus a new element is created(<p>) and appended to the existing element(<div>).
Example
In the following example, initially the div section consists of only 2 texts. But later on, one more text is created and added to the div section as shown in the output.
<html>
<body>
<div id="new">
<p id="p1">Tutorix</p>
<p id="p2">Tutorialspoint</p>
</div>
<script>
var tag = document.createElement("p");
var text = document.createTextNode("Tutorix is the best e-learning platform");
tag.appendChild(text);
var element = document.getElementById("new");
element.appendChild(tag);
</script>
</body>
</html>Output
Tutorix Tutorialspoint Tutorix is the best e-learning platform