我的模块加载系统 v22

时隔差不多两个月，积累了许多改进，升级到v22。主要改进点如下：

进行瘦身，移除本地储存
IE6789的HTML5新标签支持列表，添加一个 m标签
loadJS内容方法，在动态插入script节点，发现最新的firefox Nightly做了些改动，如果head还没有解析完就插入节点，那么新script会触发onerror事件。补救措施，针对firefox使用html.insertBefore(node, head)。chrome不支持head.insertBefore(node, null)，第二参数必须是节点，因此firefox外浏览器统一使用 head.insertBefore(node, head.firstChild)。
getCurrentScript方法进行增强，现在支持对chrome取正在解析的节点，详见源码。如此一来，除safari外，都能立即确认模块ID与script节点的对应关系。
修正parseURL转"mass.draggable"为url出错的BUG。
升级$.log，让它支持更古老的opera。
升级$.error，对异常进行包装，防止中文乱码。

现在详解一下getCurrentScript引入的新hack，利用e.stack截取正在解析的节点的src，从而得到节点。首先随便搞个错误，比如a.b.c()。在opera12的控制台下，我们通过try catch截获的输出如下：

getCurrentScript([arguments not available])@http://113.93.50.63/mass.js:424
<anonymous function: $.define>([arguments not available])@http://113.93.50.63/mass.js:606
@http://113.93.50.63/data.js:4

chrome为：

ReferenceError: a is not defined
    at getCurrentScript (http://113.93.50.63/mass.js:403:13)
    at window.define.$.define (http://113.93.50.63/mass.js:585:60)
    at http://113.93.50.63/data.js:4:1 

firefox为

getCurrentScript@http://113.93.50.63/mass.js:403
$.define@http://113.93.50.63/mass.js:585
@http://113.93.50.63/query.js:4

IE10为

ReferenceError: “a”未定义
  at getCurrentScript (http://113.93.50.63/mass.js:403:13)
  at define (http://113.93.50.63/mass.js:585:9)
  at Global code (http://113.93.50.63/data.js:4:1) 

因此，我们只要截取最后一个@或at ，与表示行号的数字前的冒号之间的URL就是正在解析的节点的src了。具体实现看文章最后的源码。

有关我框架的介绍与用法可参看这里（FQ，github）

加载器的使用可见v19的介绍，纯正的AMD用法，没有什么不同。

require("ready",function(){
/*待到domReady完成，执行回调*/
   $.log("将日志打印到页面上",true)
})

源码

!
function(global, DOC) {// by 司徒正美
    var $$ = global.$ //保存已有同名变量
    var rmakeid = /(#.+|\W)/g; //用于处理掉href中的hash与所有特殊符号，生成长命名空间
    var NsKey = DOC.URL.replace(rmakeid, ""); //长命名空间（字符串）
    var NsVal = global[NsKey]; //长命名空间（mass对象）
    var W3C = DOC.dispatchEvent //IE9开始支持W3C的事件模型与getComputedStyle取样式值
    var html = DOC.documentElement; //HTML元素
    var head = DOC.head || DOC.getElementsByTagName("head")[0]; //HEAD元素
    var loadings = []; //正在加载中的模块列表
    var parsings = []; //储存需要绑定ID与factory对应关系的模块（标准浏览器下，先parse的script节点会先onload）
    var mass = 1; //当前框架的版本号
    var postfix = ""; //用于强制别名
    var cbi = 1e5; //用于生成回调函数的名字
    var all = "lang_fix,lang,class,interact,data,support,query,support,node_fix,node,attr_fix,attr,css_fix,css,event_fix,event,ajax,fx"
    var moduleClass = "mass" + (new Date - 0);
    var class2type = {
        "[object HTMLDocument]": "Document",
        "[object HTMLCollection]": "NodeList",
        "[object StaticNodeList]": "NodeList",
        "[object IXMLDOMNodeList]": "NodeList",
        "[object DOMWindow]": "Window",
        "[object global]": "Window",
        "null": "Null",
        "NaN": "NaN",
        "undefined": "Undefined"
    }
    var toString = class2type.toString,
        basepath
        /**
         * 命名空间
         * @namespace 可变的短命名空间
         * @param  {String|Function} expr  CSS表达式或函数
         * @param  {Node|NodeList|Array|Mass} context ？ 上下文对象
         * @return {Mass}
         */
 
    function $(expr, context) { //新版本的基石
        if($.type(expr, "Function")) { //注意在safari下,typeof nodeList的类型为function,因此必须使用$.type
            return $.require(all + ",ready", expr);
        } else {
            if(!$.fn) $.error("必须加载node模块");
            return new $.fn.init(expr, context);
        }
    }
    //多版本共存
    if(typeof NsVal !== "function") {
        NsVal = $; //公用命名空间对象
        NsVal.uuid = 1;
    }
    if(NsVal.mass !== mass) {
        NsVal[mass] = $; //保存当前版本的命名空间对象到公用命名空间对象上
        if(NsVal.mass || ($$ && $$.mass == null)) {
            postfix = (mass + "").replace(/\D/g, ""); //是否强制使用多库共存
        }
    } else {
        return;
    }
    /**
     * 糅杂，为一个对象添加更多成员
     * @param {Object} receiver 接受者
     * @param {Object} supplier 提供者
     * @return  {Object} 目标对象
     * @api public
     */
    var has = Object.prototype.hasOwnProperty
 
    function mix(receiver, supplier) {
        var args = Array.apply([], arguments),
            i = 1,
            key, //如果最后参数是布尔，判定是否覆写同名属性
            ride = typeof args[args.length - 1] == "boolean" ? args.pop() : true;
        if(args.length === 1) { //处理$.mix(hash)的情形
            receiver = !this.window ? this : {};
            i = 0;
        }
        while((supplier = args[i++])) {
            for(key in supplier) { //允许对象糅杂，用户保证都是对象
                if(has.call(supplier, key) && (ride || !(key in receiver))) {
                    receiver[key] = supplier[key];
                }
            }
        }
        return receiver;
    }
    //为此版本的命名空间对象添加成员
    mix($, {
        html: html,
        head: head,
        mix: mix,
        rword: /[^, ]+/g,
        rmapper: /(\w+)_(\w+)/g,
        mass: mass,
        //大家都爱用类库的名字储存版本号，我也跟风了
        "@bind": W3C ? "addEventListener" : "attachEvent",
        /**
         * 将内部对象挂到window下，此时可重命名，实现多库共存
         * @param {String} name
         * @return {Mass}
         * @api public
         */
        exports: function(name) {
            $$ && (global.$ = $$); //多库共存
            name = name || $.config.nick; //取得当前简短的命名空间
            $.config.nick = name;
            global[NsKey] = NsVal;
            return global[name] = this;
        },
        /**
         * 数组化
         * @param {ArrayLike} nodes 要处理的类数组对象
         * @param {Number} start 可选。要抽取的片断的起始下标。如果是负数，从后面取起
         * @param {Number} end  可选。规定从何处结束选取
         * @return {Array}
         * @api public
         */
        slice: W3C ?
        function(nodes, start, end) {
            return parsings.slice.call(nodes, start, end);
        } : function(nodes, start, end) {
            var ret = [],
                n = nodes.length;
            if(end === void 0 || typeof end == "number" && isFinite(end)) {
                start = parseInt(start, 10) || 0;
                end = end == void 0 ? n : parseInt(end, 10);
                if(start < 0) {
                    start += n;
                }
                if(end > n) {
                    end = n;
                }
                if(end < 0) {
                    end += n;
                }
                for(var i = start; i < end; ++i) {
                    ret[i - start] = nodes[i];
                }
            }
            return ret;
        },
        /**
         * 用于建立一个从元素到数据的关联，应用于事件绑定，元素去重
         * @param {Any} obj
         * @return {Number} 一个UUID
         */
        getUid: W3C ?
        function(obj) { //IE9+,标准浏览器
            return obj.uniqueNumber || (obj.uniqueNumber = NsVal.uuid++);
        } : function(obj) {
            if(obj.nodeType !== 1) { //如果是普通对象，文档对象，window对象
                return obj.uniqueNumber || (obj.uniqueNumber = NsVal.uuid++);
            } //注：旧式IE的XML元素不能通过el.xxx = yyy 设置自定义属性
            var uid = obj.getAttribute("uniqueNumber");
            if(!uid) {
                uid = NsVal.uuid++;
                obj.setAttribute("uniqueNumber", uid);
            }
            return +uid; //确保返回数字
        },
        /**
         * 绑定事件(简化版)
         * @param {Node|Document|window} el 触发者
         * @param {String} type 事件类型
         * @param {Function} fn 回调
         * @param {Boolean} phase ? 是否捕获，默认false
         * @return {Function} fn 刚才绑定的回调
         */
        bind: W3C ?
        function(el, type, fn, phase) {
            el.addEventListener(type, fn, !! phase);
            return fn;
        } : function(el, type, fn) {
            el.attachEvent && el.attachEvent("on" + type, fn);
            return fn;
        },
        /**
         * 卸载事件(简化版)
         * @param {Node|Document|window} el 触发者
         * @param {String} type 事件类型
         * @param {Function} fn 回调
         * @param {Boolean} phase ? 是否捕获，默认false
         */
        unbind: W3C ?
        function(el, type, fn, phase) {
            el.removeEventListener(type, fn || $.noop, !! phase);
        } : function(el, type, fn) {
            if(el.detachEvent) {
                el.detachEvent("on" + type, fn || $.noop);
            }
        },
        /**
         * 用于取得数据的类型（一个参数的情况下）或判定数据的类型（两个参数的情况下）
         * @param {Any} obj 要检测的东西
         * @param {String} str ? 要比较的类型
         * @return {String|Boolean}
         * @api public
         */
        type: function(obj, str) {
            var result = class2type[(obj == null || obj !== obj) ? obj : toString.call(obj)] || obj.nodeName || "#";
            if(result.charAt(0) === "#") { //兼容旧式浏览器与处理个别情况,如window.opera
                //利用IE678 window == document为true,document == window竟然为false的神奇特性
                if(obj == obj.document && obj.document != obj) {
                    result = "Window"; //返回构造器名字
                } else if(obj.nodeType === 9) {
                    result = "Document"; //返回构造器名字
                } else if(obj.callee) {
                    result = "Arguments"; //返回构造器名字
                } else if(isFinite(obj.length) && obj.item) {
                    result = "NodeList"; //处理节点集合
                } else {
                    result = toString.call(obj).slice(8, -1);
                }
            }
            if(str) {
                return str === result;
            }
            return result;
        },
        /**
         *  将调试信息打印到控制台或页面
         *  $.log(str, page, level )
         *  @param {Any} str 用于打印的信息，不是字符串将转换为字符串
         *  @param {Boolean} page ? 是否打印到页面
         *  @param {Number} level ? 通过它来过滤显示到控制台的日志数量。
         *          0为最少，只显示最致命的错误；7，则连普通的调试消息也打印出来。
         *          显示算法为 level <= $.config.level。
         *          这个$.config.level默认为9。下面是level各代表的含义。
         *          0 EMERGENCY 致命错误,框架崩溃
         *          1 ALERT 需要立即采取措施进行修复
         *          2 CRITICAL 危急错误
         *          3 ERROR 异常
         *          4 WARNING 警告
         *          5 NOTICE 通知用户已经进行到方法
         *          6 INFO 更一般化的通知
         *          7 DEBUG 调试消息
         *  @return {String}
         *  @api public
         */
        log: function(str, page, level) {
            for(var i = 1, show = true; i < arguments.length; i++) {
                level = arguments[i]
                if(typeof level == "number") {
                    show = level <= $.config.level
                } else if(level === true) {
                    page = true;
                }
            }
            if(show) {
                if(page === true) {
                    $.require("ready", function() {
                        var div = DOC.createElement("pre");
                        div.className = "mass_sys_log";
                        div.innerHTML = str + ""; //确保为字符串
                        DOC.body.appendChild(div);
                    });
                } else if(global.console) {
                    global.console.log(str);
                }
            }
            return str;
        },
 
        /**
         * 生成键值统一的对象，用于高速化判定
         * @param {Array|String} array 如果是字符串，请用","或空格分开
         * @param {Number} val ? 默认为1
         * @return {Object}
         */
        oneObject: function(array, val) {
            if(typeof array == "string") {
                array = array.match($.rword) || [];
            }
            var result = {},
                value = val !== void 0 ? val : 1;
            for(var i = 0, n = array.length; i < n; i++) {
                result[array[i]] = value;
            }
            return result;
        },
        /**
         * 配置框架
         * @param  {Object} settings 配置对象
         * @return {Mass}
         */
        config: function(settings) {
            var kernel = $.config;
            for(var p in settings) {
                if(!settings.hasOwnProperty(p)) continue;
                var prev = kernel[p];
                var curr = settings[p];
                if(prev && p === "alias") {
                    for(var c in curr) {
                        if(curr.hasOwnProperty(c)) {
                            var prevValue = prev[c];
                            var currValue = curr[c];
                            if(prevValue && prev !== curr) {
                                $.error(c + "不能重命名");
                            }
                            prev[c] = currValue;
                        }
                    }
                } else {
                    kernel[p] = curr;
                }
            }
            return this
        },
        //一个空函数
        noop: function() {},
        /**
         * 抛出错误,方便调试
         * @param {String} str
         * @param {Error}  e ? 具体的错误对象构造器
         * EvalError: 错误发生在eval()中
         * SyntaxError: 语法错误,错误发生在eval()中,因为其它点发生SyntaxError会无法通过解释器
         * RangeError: 数值超出范围
         * ReferenceError: 引用不可用
         * TypeError: 变量类型不是预期的
         * URIError: 错误发生在encodeURI()或decodeURI()中
         */
        error: function(str, e) {
            throw new(e || Error)(str);
        }
    });
 
    (function(scripts) {
        var cur = scripts[scripts.length - 1],
            url = (cur.hasAttribute ? cur.src : cur.getAttribute("src", 4)).replace(/[?#].*/, ""),
            kernel = $.config;
        basepath = kernel.base = url.substr(0, url.lastIndexOf("/")) + "/";
        kernel.nick = cur.getAttribute("nick") || "$";
        kernel.alias = {};
        kernel.level = 9;
    })(DOC.getElementsByTagName("script"));
 
 
 
    "Boolean,Number,String,Function,Array,Date,RegExp,Window,Document,Arguments,NodeList,Error".replace($.rword, function(name) {
        class2type["[object " + name + "]"] = name;
    });
    /**
     * 将模块标识转换为URL
     * @param  {String} url    模块标识
     * @param  {String} parent 父路径
     * @return {Array}  ret [url, type]
     * @api private
     */
 
    function parseURL(url, parent, ret) {
        //[]里面，不是开头的-要转义，因此要用/^[-a-z0-9_$]{2,}$/i而不是/^[a-z0-9_-$]{2,}
        //别名至少两个字符；不用汉字是避开字符集的问题
        if(/^(mass|ready)$/.test(url)) { //特别处理ready标识符
            return [url, "js"];
        }
        if(/^[-a-z0-9_$]{2,}$/i.test(url) && $.config.alias[url]) {
            ret = $.config.alias[url];
        } else {
            parent = parent.substr(0, parent.lastIndexOf('/'))
            if(/^(\w+)(\d)?:.*/.test(url)) { //如果用户路径包含协议
                ret = url
            } else {
                var tmp = url.charAt(0);
                if(tmp !== "." && tmp != "/") { //相对于根路径
                    ret = basepath + url;
                } else if(url.slice(0, 2) == "./") { //相对于兄弟路径
                    ret = parent + url.substr(1);
                } else if(url.slice(0, 2) == "..") { //相对于父路径
                    var arr = parent.replace(/\/$/, "").split("/");
                    tmp = url.replace(/\.\.\//g, function() {
                        arr.pop();
                        return "";
                    });
                    ret = arr.join("/") + "/" + tmp;
                } else if(tmp == "/") {
                    ret = parent + url
                } else {
                    $.error("不符合模块标识规则: " + url);
                }
            }
        }
        var ext = "js";
        tmp = ret.replace(/[?#].*/, "");
        if(/\.(css|js)$/.test(tmp)) { // 处理"http://113.93.55.202/mass.draggable"的情况
            ext = RegExp.$1;
        }
        if(ext != "css" && tmp == ret && !/\.js$/.test(ret)) { //如果没有后缀名会补上.js
            ret += ".js";
        }
        return [ret, ext];
    }
 
 
    //============================加载系统===========================
    var modules = $.modules = {
        ready: {
            exports: $
        },
        mass: {
            state: 2,
            exports: $
        }
    };
 
 
    function getCurrentScript() {
        //取得正在解析的script节点
        if(DOC.currentScript) { //firefox 4+
            return DOC.currentScript.src;
        }
        //  参考 https://github.com/samyk/jiagra/blob/master/jiagra.js
        var stack, e, i, node;
        try {
            a.b.c(); //强制报错,以便捕获e.stack
       } catch(e) {//safari的错误对象只有line,sourceId,sourceURL
          stack = e.stack;
          if(!stack && window.opera){
             //opera 9没有e.stack,但有e.Backtrace,但不能直接取得,需要对e对象转字符串进行抽取
             stack = (String(e).match(/of linked script \S+/g) || []).join(" ");
          }
       }
        if(stack) {
            stack = stack.split( /[@ ]/g).pop();//取得最后一行,最后一个空格或@之后的部分
            stack = stack[0] == "(" ? stack.slice(1,-1) : stack;
            return stack.replace(/(:\d+)?:\d+$/i, "");//去掉行号与或许存在的出错字符起始位置
        }
        var nodes = head.getElementsByTagName("script"); //只在head标签中寻找
        for(i = 0; node = nodes[i++];) {
            if(node.className == moduleClass && node.readyState === "interactive") {
                return node.className = node.src;
            }
        }
    }
    function checkCycle(deps, nick) {
        //检测是否存在循环依赖
        for(var id in deps) {
            if(deps[id] == "司徒正美" && modules[id].state != 2 && (id == nick || checkCycle(modules[id].deps, nick))) {
                return true;
            }
        }
    }
 
 
    function checkDeps() {
        //检测此JS模块的依赖是否都已安装完毕,是则安装自身
        loop: for(var i = loadings.length, id; id = loadings[--i];) {
            var obj = modules[id],
                deps = obj.deps;
            for(var key in deps) {
                if(deps.hasOwnProperty(key) && modules[key].state != 2) {
                    continue loop;
                }
            }
            //如果deps是空对象或者其依赖的模块的状态都是2
            if(obj.state != 2) {
                loadings.splice(i, 1); //必须先移除再安装，防止在IE下DOM树建完后手动刷新页面，会多次执行它
                fireFactory(obj.id, obj.args, obj.factory);
                checkDeps();
            }
        }
    }
 
    function checkFail(node, error) {
        //检测是否死链
        var id = node.src;
        node.onload = node.onreadystatechange = node.onerror = null;
        if(error || !modules[id].state) {
            setTimeout(function() {
                head.removeChild(node);
            });
            $.log("加载 " + id + " 失败" + error + " " + (!modules[id].state), 7);
        } else {
            return true;
        }
    }
 
    function loadJS(url) {
        //通过script节点加载目标模块
        var node = DOC.createElement("script");
        node.className = moduleClass; //让getCurrentScript只处理类名为moduleClass的script节点
        node[W3C ? "onload" : "onreadystatechange"] = function() {
            if(W3C || /loaded|complete/i.test(node.readyState)) {
                //mass Framework会在_checkFail把它上面的回调清掉，尽可能释放回存，尽管DOM0事件写法在IE6下GC无望
                var factory = parsings.pop();
                factory && factory.delay(node.src)
                if(checkFail(node)) {
                    $.log("已成功加载 " + node.src, 7);
                }
            }
        }
        node.onerror = function() {
            checkFail(node, true)
        }
 
        node.src = url; //插入到head的第一个节点前，防止IE6下head标签没闭合前使用appendChild抛错
        if(window.netscape) { //这也避开了IE6下的自闭合base标签引起的BUG
            html.insertBefore(node, head); //在最新的firefox下,如果父节点还没有完成不能插入新节点
        } else {
            head.insertBefore(node, head.firstChild); //chrome下第二个参数不能为null
        }
 
        $.log("正准备加载 " + node.src, 7) //更重要的是IE6下可以收窄getCurrentScript的寻找范围
    }
 
 
    function loadCSS(url) {
        //通过link节点加载模块需要的CSS文件
        var id = url.replace(rmakeid, "");
        if(!DOC.getElementById(id)) {
            var node = DOC.createElement("link");
            node.rel = "stylesheet";
            node.href = url;
            node.id = id;
            head.insertBefore(node, head.firstChild);
        }
    }
    /**
     * 请求模块
     * @param {String|Array} list 依赖列表
     * @param {Function} factory 模块工厂
     * @param {String} parent ? 父路径，没有使用种子模块的根路径或配置项
     * @api public
     */
    window.require = $.require = function(list, factory, parent) {
        // 用于检测它的依赖是否都为2
        var deps = {},
            // 用于依赖列表中的模块的返回值
            args = [],
            // 需要安装的模块数
            dn = 0,
            // 已安装完的模块数
            cn = 0,
            id = parent || "cb" + (cbi++).toString(32);
        parent = parent || basepath
        String(list).replace($.rword, function(el) {
            var array = parseURL(el, parent),
                url = array[0];
            if(array[1] == "js") {
                dn++;
                if(!modules[url]) {
                    modules[url] = {
                        id: url,
                        parent: parent,
                        exports: {}
                    };
                    loadJS(url);
                } else if(modules[url].state === 2) {
                    cn++;
                }
                if(!deps[url]) {
                    args.push(url);
                    deps[url] = "司徒正美"; //去重
                }
            } else if(array[1] === "css") {
                loadCSS(url);
            }
        });
        //创建或更新模块的状态
        modules[id] = {
            id: id,
            factory: factory,
            deps: deps,
            args: args,
            state: 1
        }
        if(dn === cn) { //如果需要安装的等于已安装好的
            fireFactory(id, args, factory); //装配到框架中
            return checkDeps();
        }
        //在正常情况下模块只能通过_checkDeps执行
        loadings.unshift(id);
    }
    /**
     * 请求模块
     * @param {String} id ? 模块ID
     * @param {Array} deps ? 依赖列表
     * @param {Function} factory 模块工厂
     * @api public
     */
    window.define = $.define = function(id, deps, factory) { //模块名,依赖列表,模块本身
        var args = $.slice(arguments);
        if(typeof id == "string") {
            var _id = args.shift();
        }
        if(typeof args[0] === "boolean") { //用于文件合并, 在标准浏览器中跳过补丁模块
            if(args[0]) {
                return;
            }
            args.shift();
        }
        if(typeof args[0] == "function") {
            args.unshift([]);
        } //上线合并后能直接得到模块ID,否则寻找当前正在解析中的script节点的src作为模块ID
        //但getCurrentScript方法只对IE6-10,FF4+有效,其他使用onload+delay闭包组合
        id = modules[id] && modules[id].state == 2 ? _id : getCurrentScript();
        factory = args[1];
        factory.id = _id; //用于调试
        factory.delay = function(id) {
            args.push(id);
            if(checkCycle(modules[id].deps, id)) {
                $.error(id + "模块与之前的某些模块存在循环依赖");
            }
            delete factory.delay; //释放内存
            require.apply(null, args); //0,1,2 --> 1,2,0
        }
        if(id) {
            factory.delay(id, args);
        } else { //先进先出
            parsings.push(factory);
        }
    }
    $.require.amd = modules;
    /**
     * 请求模块从modules对象取得依赖列表中的各模块的返回值，执行factory, 完成模块的安装
     * @param {String} id  模块ID
     * @param {Array} deps 依赖列表
     * @param {Function} factory 模块工厂
     * @api private
     */
 
    function fireFactory(id, deps, factory) {
        for(var i = 0, array = [], d; d = deps[i++];) {
            array.push(modules[d].exports);
        }
        var module = Object(modules[id]),
            ret = factory.apply(global, array);
        module.state = 2;
        if(ret !== void 0) {
            modules[id].exports = ret;
        }
        return ret;
    }
    all.replace($.rword, function(a) {
        $.config.alias["$" + a] = basepath + a + ".js";
    });
    //============================domReady机制===========================
    var readyFn, ready = W3C ? "DOMContentLoaded" : "readystatechange";
 
    function fireReady() {
        modules.ready.state = 2;
        checkDeps();
        if(readyFn) {
            $.unbind(DOC, ready, readyFn);
        }
        fireReady = $.noop; //隋性函数，防止IE9二次调用_checkDeps
    }
 
    function doScrollCheck() {
        try { //IE下通过doScrollCheck检测DOM树是否建完
            html.doScroll("left");
            fireReady();
        } catch(e) {
            setTimeout(doScrollCheck);
        }
    };
    //在firefox3.6之前，不存在readyState属性
    //http://www.cnblogs.com/rubylouvre/archive/2012/12/18/2822912.html
    if(DOC.readyState == null) {
        var readyState = DOC.readyState = "loading";
    }
    if(DOC.readyState === "complete") {
        fireReady(); //如果在domReady之外加载
    } else {
        $.bind(DOC, ready, readyFn = function() {
            if(W3C || DOC.readyState === "complete") {
                fireReady();
                if(readyState) { //IE下不能改写DOC.readyState
                    DOC.readyState = "complete";
                }
            }
        });
        if(html.doScroll && self.eval === parent.eval) doScrollCheck();
    }
    //============================HTML5新标签支持===========================
    //IE6789必须以硬编码形式把mass.js写在页面才生效
    global.VBArray && ("abbr,article,aside,audio,bdi,canvas,data,datalist,details,figcaption,figure,footer," + "header,hgroup,m,mark,meter,nav,output,progress,section,summary,time,video").replace($.rword, function(tag) {
        DOC.createElement(tag);
    });
    //============================HTML5无缝刷新页面支持======================
    //https://developer.mozilla.org/en/DOM/window.onpopstate
    $.bind(global, "popstate", function() {
        NsKey = DOC.URL.replace(rmakeid, "");
        $.exports();
    });
    $.exports($.config.nick + postfix); //防止不同版本的命名空间冲突
    //============================合并核心模块支持===========================
    /*combine modules*/
 
}(self, self.document); //为了方便在VS系列实现智能提示,把这里的this改成self或window