如何使用Javascript保存和恢复整个网站？

您好我正在使用 Javascript开发自己的路由器API.它基于#FregmentIdentifiers(document.location.hash)进行路由.

api完成了almos,但我仍然在做backbuttom事件.每当按下后退按钮并且哈希值发生变化时,之前就会看到,旧内容将被恢复.

您知道如何保存和恢复所有内容吗？

我的问题是,如果我保存并恢复document.body.innerHTML,只会恢复标记,但不会恢复事件,例如googlemaps停止工作.
我试图克隆document.body或document.documentElement,但javascript或者告诉我该字段没有setter或者我的克隆无效.

编辑：

为了明确我正在做的事情,我决定发布我当前的代码.
问题针对标有// Todo评论的部分.

function Router(){
var that = this;
var router = this;
var executionObservers = [];
that.routes = [];
this.registerRoute = function(route){
    that.routes.push(route);
};
var history = null;
this.init = function(){
    var i;
    var identifier = document.location.hash;
    history = new History();
    history.start();
    if(identifier.length > 0){
        identifier = identifier.substring(1,identifier.length);
        for(i = 0; i< that.routes.length; i++){
            var route = that.routes[i];
            if(route.contains(identifier)){
                route.getAction(identifier)(route.getParams(identifier));
                return true;
            }
        }
    }
    return false;
};
this.executed = function (identifier){
    var i; 
    for(i=0; i<executionObservers.length; i++){
        executionObservers[i](identifier);
    }
    document.location.hash = identifier;
};

this.addExecutionObserver = function(observer){
    executionObservers.push(observer);
};

function History(){
    var history = [];
    var timeout = 200;
    var lastAddedHash = null;
    var loop = function(callback){
        var hash = window.location.hash;
        window.setTimeout(
            function(){
                if(window.location.hash!=hash){
                    hash = window.location.hash;
                    callback(hash);
                }
                loop(callback);
            },timeout
        );
    };
    this.add = function(hash){
        lastAddedHash  = hash;
        window.setTimeout(addCallback(hash),timeout);          
    };
    addCallback = function(hash){
        return function(){
            var i;
            var found = false;
            for(i =0; i< history.length&&!found; i++){
                if(history[i][1] == hash){
                    found = true;
                    //Todo create backup
                    //history[i][0] = 
                }
            }
            if(!found){history.push(new Array(document.documentElement.cloneNode(true),hash));}
        }
    }
    this.setTimeout = function(micoseconds){
        timeout = microseconds;
    };
    started = false;
    this.start = function(){
        if(!started){
            started = true;
            loop(function(hash){
                var i;
                if(lastAddedHash!=null&&hash!=lastAddedHash){
                    for(i =0; i<history.length; i++){
                        if(history[i][1] == hash){
                            //Todo restore from backup
                            document.location.reload();
                        }
                    }
                }
            });
        }
    };
    router.addExecutionObserver(this.add);
}
}

Router.instance = null;
Router.getInstance = function(){
    if(Router.instance === null ){
        Router.instance = new Router();
    }
    return Router.instance;
};

/**
 * @param getParams = function(identifier)
 * @param getIdentifier = function(params)
 * @param contains = function(identifier)
 */
function Route(action,getParams,getIdentifier,contains){
    var that = this;
    var router = Router.getInstance();
    this.contains = contains;
    this.getParams = getParams;
    this.getAction = function(){
        return action;
    }
    this.reExecute = function(identifier){
        action(getParams(identifier));
    };
    this.execute = function(params){
        action(params);
        this.executed(params);
    }
    this.executed = function(params){
        router.executed('#' + getIdentifier(params));
    };
    this.register = function(){
        router.registerRoute(this);
    };
}
function PrefixedRouterConfig(prefix,paramRegexes){
    this.contains = function(identifier){
        var regex = "^" + prefix;
        for(var i=0;i<paramRegexes.length;i++){
            regex+="_"+paramRegexes[i];
        }
        regex +="$";
        var match = identifier.match(regex);
        return match != null && (typeof match) == 'object' && (match[0] == identifier);
    };
    this.getIdentifier = function(params){
        ret = prefix;
        for(var i=0;i<params.length;i++){
            ret+="_"+params[i];
        }
        return ret;
    };
    this.getParams = function(identifier){
        var regex = "^" + prefix;
        for(var i=0;i<paramRegexes.length;i++){
            regex+="_("+paramRegexes[i]+")";
        }
        regex +="$";
        var matches = identifier.match(regex);
        var ret = [];
        for(var i=1;i<matches.length;i++){
            ret.push(matches[i]);
        }
        return ret;
    };
}

我的api的示例用法可能如下所示：

config = new PrefixedRouterConfig('show_map',new Array("\\d+","-?\\d+(?:\\.\\d+)?","-?\\d+(?:\\.\\d+)?"));
var ROUTE_SHOW_MAP = new Route(
    function(params){
        var zoom = params[0];
        var lat = params[1];
        var lng = params[2];
        MyGmapInterface.preparePage(-1);
        addTabSelectedCallback(MyGmapInterface.tabLoaded);
        addTabClosedCallback(MyGmapInterface.tabClosed);
        MyGmapInterface.tabsLoaded = true;
        MyGmapInterface.myMap = new MyMap(lat,lng,zoom,MyGmapInterface.getMapContainer(),MyGmapInterface.notCompatible);
        MyGmapInterface.addNewCamMarkers(MyGmapInterface.loadCams());
        MyGmapInterface.initListeners();
        tabSelected(TAB_LEFT);
    },config.getParams,config.getIdentifier,config.contains
);
ROUTE_SHOW_MAP.register();

在包含所有Javascript文件(可能注册路由)之后,我调用了Router.getInstance().init();

当我在某处做一个存在路径的ajax请求(手动)时,我调用ROUTE_NAME.executed()来设置fregment标识符并将其注册到历史记录中.

此外,我有一个观察者,只要执行()更改位置哈希,就会更新一些用于直接翻译的链接.