index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Local Storage Example</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            padding: 20px;
        }
        label, .value-display {
            display: block;
            margin-top: 20px;
        }
        input[type="text"] {
            padding: 8px;
            font-size: 16px;
            margin-top: 5px;
        }
    </style>
</head>
<body>
    <h1>Local Storage Example</h1>
    <div>
        <label for="inputValue">Enter Value:</label>
        <input type="text" id="inputValue" oninput="updateLocalStorage()" />
    </div>
    <div class="value-display">
        <strong>Stored Value: </strong><span id="displayValue">undefined</span>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', function() {
            // Function to display the value from local storage when the page loads
            function displayValue() {
                var storedValue = localStorage.getItem('myValue');
                document.getElementById('displayValue').textContent = storedValue || 'undefined';
            }

            // Call the display function on page load
            displayValue();
        });

        // Function to update local storage and the display
        function updateLocalStorage() {
            var inputValue = document.getElementById('inputValue').value;
            localStorage.setItem('myValue', inputValue);
            document.getElementById('displayValue').textContent = inputValue;
        }
    </script>
</body>
</html>