CODE EXAMPLE FOR JAVASCRIPT

many button with many action in javascript

<?php
    switch($_REQUEST['subject']) {

        case 'html': // Action for HTML here
                     break;

        case 'css': // Action for CSS here
                    break;

        case 'javascript': // Action for JavaScript here
                           break;

        case 'jquery': // Action for jQuery here
                       break;
    }
?>