根据返回值动态加载select

   // 路由
                         if (return_routeChoice != null && return_routeChoice != "") {
                             for (var i = 0; i < return_routeChoice.length; ++i) {
                                 $(".routeChoice").append('<option value="' + return_routeChoice[i] + '">' + return_routeChoice[i] + '</option>');
                             }
                         }