How can JavaScript be effectively used in conjunction with PHP for menu functionality?

To create dynamic menus in a web application, JavaScript can be used to enhance the user experience by adding interactivity and responsiveness. PHP can be used to generate the menu structure dynamically based on data retrieved from a database or other sources. By combining both technologies, you can create a seamless and efficient menu system that adapts to user interactions.

<?php
// PHP code to generate a menu structure
$menuItems = array(
    array("Home", "index.php"),
    array("About Us", "about.php"),
    array("Services", "services.php"),
    array("Contact Us", "contact.php")
);

echo '<ul>';
foreach ($menuItems as $item) {
    echo '<li><a href="' . $item[1] . '">' . $item[0] . '</a></li>';
}
echo '</ul>';
?>