【转】跨域删除cookie的问题+

转：http://www.cnblogs.com/wucf2004/archive/2008/08/12/1266076.html

 

//参考别人的方法

HttpCookie MyCo;         string _strPageDomain="test.cn";        if (_strPageDomain != null && _strPageDomain != "")        {            MyCo = HttpContext.Current.Request.Cookies["siteinfo"];            if (System.Web.HttpContext.Current.Request.ServerVariables.ToString().IndexOf(_strPageDomain)>= 0 && MyCo != null)            {                MyCo.Domain = _strPageDomain;                MyCo.Expires = DateTime.Now.AddHours(-24); //关键是这一句                HttpContext.Current.Response.Cookies.Add(MyCo);            }        }        else        {            MyCo = HttpContext.Current.Request.Cookies["siteinfo"];            if (MyCo != null)            {                MyCo.Expires = DateTime.Now.AddHours(-48);                                HttpContext.Current.Response.Cookies.Add(MyCo);            }        }

// JS 方法

//删除Cookie function delCookie(_name) {     var date = new Date();     date.setTime (date.getTime() - 1);     document.cookie = _name + "=; path=/; expires="+ date.toGMTString(); } delCookie("userName"); /* *Cookie跨域的问题取决于domain的设置，比如一个二级域名a.zhidao123.net，另一个二级域名b.zhidao123.net要同享Cookie，那么只需设置domain=zhidao123.net即可 *所有目录共享要设置path，path=/表示将cookie设置在根目录，这样所有目录下的页面都能读到这个cookie *如果path不设置，默认的路径是当前页面的所在的目录，如果根目录和当前页面目录下有相同的cookie，则先获取当前页面所在目录的cookie */ //写入Cookie function addCookie(_name,_value,_hours) {     var str = _name + "=" + escape(_value);     if(_hours > 0)     {         var date = new Date();         var ms = _hours * 3600 * 1000;         date.setTime(date.getTime() + ms);         str += "; expires=" + date.toGMTString() + "; domain=zhidao123.net; path=/;";     }     document.cookie = str; } addCookie("userName","Your Name",10); //读取Cookie function getCookie(_name) {     var arrStr = document.cookie.split("; ");//请注意分号后面有空格，空格不能省略     for(var i = 0;i < arrStr.length;i ++)     {         var temp = arrStr[i].split("=");         if(temp[0] == _name) return unescape(temp[1]);     } } document.write(getCookie("userName"));