How to Change the ID of Element using JavaScript?

Last Updated : 19 Sep, 2024

We are given an element and the task is to change the ID of elements using JavaScript.

ID is unique for any element and it can be assigned to an element only once. JavaScript provides a method to access this id and also to manipulate the id.

Syntax:

Selected_element.id = newID;

Below are the appraoches to change the ID of element using JavaScript:

Table of Content

Using the id property
Using the id property with inline onclick function

Using the id property

In this approach we are using the id property in JavaScript to change the ID of an HTML element. The id property allows us to get or set the ID of an element.

Example: In this example, we will use the id property for changing the id.

html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>How to Change the ID of an Element Using JavaScript</title>
    <style>
        .div {
            height: 100px;
            width: 200px;
            margin: 20px auto;
            color: white;
            transition: background-color 0.3s;
        }

        #div1 {
            background: green;
        }

        #div2 {
            background: blue;
        }

        body {
            font-family: Arial, sans-serif;
            text-align: center;
            margin: 0;
            padding: 20px;
        }

        h1 {
            color: green;
        }

        button {
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            background-color: #3498db;
            color: white;
            font-size: 16px;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        button:hover {
            background-color: #2980b9;
        }
    </style>
</head>

<body>

    <h1>GeeksForGeeks</h1>

    <p id="GFG_UP"></p>

    <div class="div" id="div1"></div>
    <br>

    <button onclick="GFG_Fun()">
        Click Here
    </button>

    <script>
        let el_up = document.getElementById('GFG_UP');
        el_up.innerHTML = "Click on the button to change the ID of the box.";

        function GFG_Fun() {
            let box = document.getElementById('div1');
            if (box) {
                box.id = 'div2'; // Change the ID of the div
            }
        }
    </script>
</body>

</html>

Output:

Using the id property with inline onclick function

Using JavaScript, we can use the id property inside the element to change the ID.

Example: In this example, we will use the id property for changing the id.