The nodeName property in JavaScript is used to specify the name of a node.
Example
You can try to run the following code to learn how to implement a nodeName property in JavaScript.
<!DOCTYPE html>
<html>
<body>
<h1 id="id1">Tutorials</h1>
<p id="id2">Demo Content</p>
<p id="id3"></p>
<p id="id4"></p>
<script>
document.getElementById("id3").innerHTML = document.getElementById("id1").nodeName;
document.getElementById("id4").innerHTML = document.getElementById("id2").nodeName;
</script>
</body>
</html>