HTML DOM tagName Property

The DOM tagName Property is used to return the tagname of the Element. It is read-only property and used to display the returned value of tagName in UPPERCASE letters.

Syntax:

element.tagName

Return Value: It returns a string value which represent the tagName of the element in UPPERCASE letters.

Example:

HTML

<!DOCTYPE html>
<html>
<head>
    <style>
        h1 {
            color: green;
            font-size: 35px;
        }
    </style>
</head>
 
<body>
    <center>
        <h1>GeeksForGeeks</h1>
        <h2 id="GFG">DOM tagName Property</h2>
            <button onclick="Geeks()">Submit</button>
            <p id="sudo"></p>
 
            <script>
                function Geeks() {
                    var w = document.getElementById("GFG").tagName;
                    document.getElementById("sudo").innerHTML = w;
                }
            </script>
      </center>
</body>
</html>