js访问url和cookie

function QueryString() {
    var data = [];
    this.Read = function() {
        var aPairs, aTmp;
        var queryString = new String(window.location.search);
        queryString = queryString.substr(1, queryString.length); //remove "?"
        aPairs = queryString.split("&");

        for (var i = 0; i < aPairs.length; i++) {
            aTmp = aPairs[i].split("=");
            data[aTmp[0]] = aTmp[1];
        }
    }

    this.GetValue = function(key) {
        return data[key];
    }
    this.SetValue = function(key, value) {
        if (value == null)
            delete data[key];
        else
            data[key] = value;
    }
    this.ToString = function() {
        var queryString = new String("");

        for (var key in data) {
            if (queryString != "")
                queryString += "&"
            if (data[key])
                queryString += key + "=" + data[key];
        }
        if (queryString.length > 0)
            return "?" + queryString;
        else
            return queryString;
    }
    this.Clear = function() {
        delete data;
        data = [];
    }
}

function Cookies() {
    var cookieData = [];

    this.Read = function() {
        var pairs = new String(window.document.cookie).split(";");
        var tmp, cookieName, keyName;
        for (var i = 0; i < pairs.length; i++) {
            tmp = pairs[i].split("=");

            if (tmp.length == 3) {
                cookieName = new String(tmp[0]);
                cookieName = cookieName.replace(" ", "");

                if (cookieData[cookieName] == null)
                    cookieData[cookieName] = [];
                cookieData[cookieName][tmp[1]] = unescape(tmp[1]);
            } else //length = 2
            {
                keyName = tmp[0];
                keyName = keyName.replace(" ", "");
                if (keyName.substring(0, 12) != "ASPSESSIONID") {
                    if (cookieData[""] == null)
                        cookieData[""] = [];
                    cookieData[""][keyName] = unescape(tmp[1]);
                }
            }
        }

    }

    this.GetValue = function(cookie, key) {
        if (cookieData[cookie] != null)
            return cookieData[cookie][key];
        else
            return null;
    }
    this.SetValue = function(cookie, key, value) {
        if (cookieData[cookie] == null)
            cookieData[cookie] = [];
        cookieData[cookie][key] = value;
    }
    this.Write = function() {

        var toWrite;
        var thisCookie;
        var expireDateKill = new Date();
        var expireDate = new Date();
        expireDate.setYear(expireDate.getFullYear() + 10);
        expireDateKill.setYear(expireDateKill.getFullYear() - 10);

        var pairs = new String(window.document.cookie).split(";");
        var tmp, cookieName, keyName;
        for (var i = 0; i < pairs.length; i++) {
            tmp = pairs[i].split("=");
            if (tmp.length == 3) {
                window.document.cookie = tmp[0] + "=" + tmp[1] + "='';expires=" + expireDateKill.toGMTString();
            } else {
                keyName = tmp[0];
                keyName = keyName.replace(" ", "");
                if (keyName.substring(0, 12) != "ASPSESSIONID")
                    window.document.cookie = keyName + "='';expires=" + expireDateKill.toGMTString();
            }
        }

        for (var cookie in cookieData) {
            toWrite = "";
            thisCookie = cookieData[cookie];
            for (var key in thisCookie) {
                if (thisCookie[key] != null) {
                    if (cookie == "")
                        toWrite = key + "=" + thisCookie[key];
                    else
                        toWrite = cookie + "=" + key + "=" + escape(thisCookie[key]);
                    toWrite += "; expires=" + expireDate.toGMTString();
                    window.document.cookie = toWrite;
                }
            }
        }
    }
}