jquery datepicker更改年份下拉列表未显示

Question

我有关于Jquery Datepicker的问题。更改年/月下拉菜单未显示。

我的代码：

$( document ).ready((function () {
    $("#dtBirthday").datepicker({
        changeMonth: true,
        changeYear: true,
      });
}));

和

@Html.TextBoxFor(model => model.creditApply.User.Birthday, new { @class = "txt-form", @id = "dtBirthday", @required = true, placeholder = "Doğum tarihi GG/AA/YYYY"})