use ajax to load script

require.cache.js

define(['module'], function (module) {
    'use strict';

    var storage = (function(){
        var uid = new Date,
            result;
        try {
            localStorage.setItem(uid, uid);
            result = localStorage.getItem(uid) == uid;
            localStorage.removeItem(uid);
            return result && localStorage;
        } catch(e) {}
    })();

    var cache = {
        get: function (url, callback) {
            var xhr = new XMLHttpRequest();

            xhr.open('GET', url, true);
            xhr.onreadystatechange = function (evt) {
                if (xhr.readyState === 4) {
                    callback(xhr.responseText);
                }
            };

            xhr.send(null);
        },
        load: function (name, req, load, config) {
            var cached, url = req.toUrl(name);

            if (storage) {
                cached = storage.getItem(url);

                if (cached !== null) {
                    load.fromText(name, cached);
                } else {
                    cache.get(url, function (content) {
                        load.fromText(name, content);

                        req([name], function (content) {
                            load(content);
                        });

                        try {
                            storage.setItem(url, content);
                        } catch (e) {}
                    });

                    return;
                }
            }

            req([name], function (content) {
                load(content);
            });
        }
    };

    return cache;
});