What are some potential pitfalls of relying on JavaScript for form submission in PHP?

One potential pitfall of relying on JavaScript for form submission in PHP is that it can bypass client-side validation and allow malicious users to submit data directly to the server without proper validation. To prevent this, always ensure that server-side validation is in place to validate the submitted data before processing it. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Server-side validation
    $name = $_POST['name'];
    $email = $_POST['email'];
    
    if (empty($name) || empty($email)) {
        echo "Please fill in all fields.";
    } else {
        // Process the form data
        // Your code here
    }
}
?>

Keywords

JavaScript form submission PHP validation security

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