index.html

<!DOCTYPE html>
<html>
<head>
    <title>Show/Hide Dropdown Example</title>
    <style>
        /* Simple styling for the dropdown menu */
        .dropdown {
            display: none; /* Initially hide the dropdown */
            margin-top: 10px;
        }
    </style>
</head>
<body>
    <h1>Dropdown Show/Hide Example</h1>
    
    <!-- Select element to show/hide the dropdown -->
    <select id="showDropdown" onchange="toggleDropdown()">
        <option value="hide">Hide Dropdown</option>
        <option value="show">Show Dropdown</option>
    </select>

    <!-- Dropdown menu to be shown/hidden -->
    <div id="dropdownMenu" class="dropdown">
        <p>This is the dropdown content.</p>
        <!-- You can add more dropdown items here -->
    </div>

    <script>
        // Function to toggle the visibility of the dropdown menu
        function toggleDropdown() {
            // Get the selected value from the select element
            var selectElement = document.getElementById('showDropdown');
            var selectedValue = selectElement.value;

            // Get the dropdown menu element
            var dropdownMenu = document.getElementById('dropdownMenu');

            // Show or hide the dropdown menu based on the selected value
            if (selectedValue === 'show') {
                dropdownMenu.style.display = 'block'; // Show the dropdown
            } else {
                dropdownMenu.style.display = 'none'; // Hide the dropdown
            }
        }

        // Adding comments as requested by Manish
        // Manish: This function toggles the visibility of the dropdown menu based on the selected value
    </script>
</body>
</html>