HTML DOM Legend Object

Last Updated : 14 Jun, 2023

The DOM Legend Object is used to represent the HTML <legend> element. The legend element is accessed by getElementById().

Properties:

Form: it is used to return the reference of the form that contains the legend element.

Syntax:

document.getElementById("ID">);

Where “id” is the ID assigned to the “legend” tag.

Example 1:In this example, we will use the DOM Legend Object

HTML

<!DOCTYPE html>
<html>
<head>
    <title>DOM Legend Object</title>
    <style>
        form {
            width: 50%;
        }
        label {
            display: inline-block;
            clear: left;
            width: 90px;
            margin: 5px;
            text-align: left;
        }
        input[type="text"] {
            width: 250px;
            margin: 5px 0px;
        }
        .gfg {
            font-size: 40px;
            color: green;
            font-weight: bold;
        }
    </style>
</head>
   
<body>
    <div class="gfg">GeeksforGeeks</div>
    <h2>DOM Legend object</h2>
    <form>
        <fieldset>
            <!-- Assigning legend id -->
            <legend id="GFG">STUDENT::</legend>
            <label>Name:</label>
            <input type="text">
            <br>
            <label>Email:</label>
            <input type="text">
            <br>
            <label>Date of birth:</label>
            <input type="text">
            <br>
            <label>Address:</label>
            <input type="text">
            <br>
            <label>Enroll No:</label>
            <input type="text">
        </fieldset>
    </form>
    <br>
    <button onclick="myGeeks()">Submit</button>
    <script>
        function myGeeks() {
 
            // change the color and font-size of legend tag
            let g = document.getElementById("GFG");
            g.style.color = "coral";
            g.style.fontSize = "20px";
        }
    </script>
</body>
</html>

Output:

Example 2: Legend Object can be created by using the document.createElement method.

HTML

<!DOCTYPE html>
<html>
<head>
    <title>DOM Legend Object</title>
    <style>
        form {
            width: 50%;
        }
        label {
            display: inline-block;
            clear: left;
            width: 90px;
            margin: 5px;
            text-align: left;
        }
        input[type="text"] {
            width: 250px;
            margin: 5px 0px;
        }
        .gfg {
            font-size: 40px;
            color: green;
            font-weight: bold;
        }
    </style>
</head>
   
<body>
    <div class="gfg">GeeksforGeeks</div>
    <h2>DOM Legend object</h2>
    <form>
        <fieldset id="GFG">
            <label>Name:</label>
            <input type="text">
            <br>
            <label>Email:</label>
            <input type="text">
            <br>
            <label>Date of birth:</label>
            <input type="text">
            <br>
            <label>Address:</label>
            <input type="text">
            <br>
            <label>Enroll No:</label>
            <input type="text">
        </fieldset>
    </form>
    <br>
    <button onclick="myGeeks()">Submit</button>
    <script>
        function myGeeks() {
            // Legend object created
            let g = document.createElement("LEGEND");
            let f = document.createTextNode("STUDENT:");
            g.appendChild(f);
            document.getElementById("GFG").appendChild(g);
        }
    </script>
</body>
</html>