jquery.js

function include(script) {
    $.ajax({
        url: script,
        dataType: "script",
        async: false,
        success: function() {
            // everything works fine
        },
        error: function() {
            throw new Error("Could not load script " + script);
        }
    });
}

 include("/inc/js/jquery-ui.js");
 include("/inc/js/functions.js");
 include("/inc/js/plugins.js");
 include("/inc/js/editor.js");