What are some best practices for ensuring that web applications remain functional if JavaScript is disabled by the user?

When JavaScript is disabled by the user, web applications may not function properly as many interactive features rely on JavaScript for functionality. To ensure that the web application remains functional even when JavaScript is disabled, developers can implement server-side validation and processing using PHP. This way, essential functionalities such as form submissions and data processing can still be handled on the server side even without JavaScript. 

<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // Process form data
    $name = $_POST['name'];
    $email = $_POST['email'];
    
    // Validate form data
    if (!empty($name) && !empty($email)) {
        // Perform necessary actions (e.g. save data to database)
        echo 'Form submitted successfully!';
    } else {
        echo 'Please fill out all fields.';
    }
}
?>

<form method="post">
    <input type="text" name="name" placeholder="Name">
    <input type="email" name="email" placeholder="Email">
    <button type="submit">Submit</button>
</form>

Keywords

PHP server-side scripting graceful degradation noscript tag feature detection

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