填充下拉列表不工作

Question

我有地区此脚本：

function LoadRegions() { 
    var region = $('#RegionID'); 
    alert("test"); 
    var url = "../Account/GetRegions"; 
    $.getJSON(url, { countryId: $('#CountryID').val() }, function (response) { 
     // clear and add default (null) option 

     region.empty().append($('<option></option>').val('').text("Please select")); 


     for (var i = 0; i < response.length; i++) { 
      region.append($('<option></option>').val(response[i].Id).text(response[i].Name)); 
     } 

    }); 
} 

在鉴于我有：

@Html.DropDownListFor(m => m.SelectCountryId, Model.Countries, @Translator.Translate("PLEASE_SELECT"), new { id = "CountryID", @class = "form-control", @onchange = "LoadRegions();"}) 

在控制器我有：

[AllowAnonymous] 
    public JsonResult GetRegions(int countryId) // return a JsonResult 
    { 
     IUserManager manager = UserFactory.GetUserManager(WebConfiguration.DefaultTerminalId); 
     var model = manager.GetRegions(countryId); 
     return Json(model, JsonRequestBehavior.AllowGet); 
    } 

我的想法是，当用户选择一个国家，我得到的地区，但由于某种原因，这是不working.any帮助？我得到警报是在功能上，但没有别的

编辑：我的路线

routes.MapRoute(
       name: "DefaultAppWithLanguages", 
       url: "app/{languageId}/{controller}/{action}/{id}", 
       defaults: new { language = "en", controller = "App", action = "Index", id = UrlParameter.Optional }, 
       constraints: new { languageId = @"^[a-zA-Z]{2}$" } 
      ); 

      routes.MapRoute(
       name: "DefaultApp", 
       url: "app/{controller}/{action}/{id}", 
       defaults: new { language = "en", controller = "App", action = "Index", id = UrlParameter.Optional } 
      ); 

      routes.MapRoute(
       name: "Default", 
       url: "{*url}", 
       defaults: new { language = "en", controller = "App", action = "Index", id = UrlParameter.Optional } 
      ); 

Answer 1

此基础上，你的路线，var url = "../Account/GetRegions";不会打的方法。你需要改变它是

var url = '/app/en/Account/GetRegions';