Is it best practice to use jQuery for handling form submission success messages and redirection in PHP?

It is not necessary to use jQuery for handling form submission success messages and redirection in PHP. You can achieve this using PHP alone by setting session variables to store the success message and using the header function to redirect the user to another page after form submission.

<?php
session_start();

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form submission here

    // Set success message
    $_SESSION['success_message'] = "Form submitted successfully.";

    // Redirect to another page
    header("Location: success.php");
    exit();
}
?>