js获取cookie

 //获取cookie
            getCookie: function (NameOfCookie) {
                if (document.cookie.length > 0) {
                    begin = document.cookie.indexOf(NameOfCookie + "=");
                    if (begin !== -1) {
                        begin += NameOfCookie.length + 1;
                        end = document.cookie.indexOf(";", begin);
                        if (end === -1) end = document.cookie.length;
                        return unescape(document.cookie.substring(begin, end));
                    }
                }
                return null;
            },