@onchange中的Ajax調用會引發錯誤“ URL未定義”

Question

我試圖在用戶更改父下拉菜單時調用Ajax來填充下拉菜單，但是我收到url undefined錯誤，請問有人可以指導我嗎

提前致謝。

.cshtml：

@Html.DropDownList("queueclientDropdownList", new SelectList(Model.Clients, "Id", "Name"), "Select Client", new { ng_model = "queueclientDropdownList", ng_required = "false", ng_value = "false", @class = "form-control", @onchange = "ClientChange()" })

Ajax電話：

function ClientChange() {
    var clientId = $('#queueclientDropdownList').val();
    $.ajax({
        url: '/QueueBuilder/GetDepartmentsByClient',
        type: "POST",
        dataType: "JSON",
        data: { clientId: clientId },
        success: function (data) {
            $("#queuedepartmentDropdownList").empty();
            $("#queuedepartmentDropdownList").append($('<option></option>').val(0).html("Select Department"));
            $.each(data, function (i, department) {
                $("#queuedepartmentDropdownList").append($('<option></option>').val(department.Id).html(department.Name));
            });
        }
    });
    return true;
}

Answer 1

請嘗試將您的url參數更改為：

url: 'your_project_baseurl/controller/method/function_name',