require.js

//lazy loading
        //modul loader -> load js files with ajax requests
        //data-main -> config
        //script sufix must be omited
        //relative path from app-config directory

        /* app-config.js */
        (function () {
            require.config({
                paths: {
                    "jquery": "libs/jquery-2.0.3"
                }
            });

            //require jquery for function
            //can be used path too -> "libs/jquery-2.0.3" without config
            require(["jquery"], function ($) {
                $("html").append("module loaded");
            });
        }());

        /* moduls */
        // moduls 1 per file
        // name of modul is path of file
        // function define creates modul
        define(function () {
            //do
            return something
        }())
        // or define just data modul json
        define({ someJson: true })
        // no dependencies
        define(function () {
            var Class = (function () { .............. }())
            return Class;
        });
        // with dependencies
        define(['dependance modul1', 'dependance modul2' ...], function () {
            var Class = (function () { .............. }())
            return Class;
        });
        // dependance objects are paramethers of function
        define(['rsvp','qjuery'], function(rsvp, $))

        //something like main  method
        require(["jquery","mustache", "app/data-persister", "app/controls"], function ($, mustache, data, controls) {
            data.people()
                .then(function (people) {

                    var personTemplateString = $("#person-template").html();

                    var template = mustache.compile(personTemplateString);

                    var listView = controls.listView(people);
                    var listViewHtml = listView.render(template);

                    $("body").append(listViewHtml);

                }, function (err) {
                    console.error(err);
                });
        });

       // all moduls load their own dependences but not overlap if olready loaded
       // dependences loads in parallel (if depends each other)
       // moduls return objects (but not mandatory)