HTML DOM previousSibling Property

The previousSibling property is used to return the previous node of the specified node as Node object or null if the specified node is the first in the list. It is a read-only property.

Syntax:

node.previousSibling

Return value: This property returns a previous sibling of the specified node or null if the current node has no previous sibling.

Example: In this example, we will use previousSibling property

HTML

<html>
 
<head>

    <title>DOM previousSibling Property</title>

</head>
 
<body style="text-align: center">

    <h1 style="color:green">

        GeeksforGeeks

    </h1>

    <h2>

        DOM previousSibling Property

    </h2>

    <div>

        <span id="p1">GeeksforGeeks! </span><span id="p2">

            A computer science portal for geeks.

        </span>

    </div>

    <br>

    <button onclick="geek()">Click me!</button>

    <br><br>

    <p id="p" style="margin:auto; width: 40%"></p>

    <!-- Function to return the previous node.-->

    <script>

        function geek() {

            let x = document.getElementById("p2")

                    .previousSibling.innerHTML;

            document.getElementById("p").innerHTML = x;

            document.getElementById("p").style.color = "white";

            document.getElementById("p").style.background = "green";

        }

    </script>

</body>
 
</html>