HTML | DOM createAttribute() Method

Difficulty Level : Basic
Last Updated : 24 Jul, 2019

This createAttribute() method is used to create an attribute with the specified name and returns the attribute object. The attribute.value property is used to set the value of the attribute and the element.setAttribute() method is used to create a new attribute for an element. This method() contains the name of the created attribute as a parameter values.

Syntax:

document.createAttribute( attributename )

Example:

<!DOCTYPE html>
<html>
    <head>
        <title>DOM createAttribute Method</title>
        <style>
            .gfg {
                color: green;
                font-weight:bold;
                font-size:50px;
            }
            body {
                text-align:center;
            }
        </style>
    </head>
    <body>
        <h1>GeeksforGeeks</h1>
        <h2>DOM createAttribute() Method</h2>
        <button onclick="geeks()">Submit</button>
        <script>
        function geeks() {
            var tag_name =
                document.getElementsByTagName("h1")[0];
            var attr = 
                document.createAttribute("class");
            attr.value = "gfg";
            tag_name.setAttributeNode(attr);
        }
        </script>
    </body>
</html>                    

Output:

Example 2:

<!DOCTYPE html>
<html>
    <head>
        <style>
            h1 {
                color:green;
            }
            body {
                text-align:center;
            }
        </style>
    </head>
    <body>
        <h1>GeeksforGeeks</h1>
        <h2>DOM createAttribute() Method</h2>
        <a id="gfg">Visit GeeksForGeeks...</a><br><br>
        <button onclick="geeks()">Submit</button>
        <script>
            function geeks() {
                var id= document.getElementById("gfg");
                var new_attr = document.createAttribute("href");
                new_attr.value = "#";
                id.setAttributeNode(new_attr);
            }
        </script>
    </body>
</html>                    