jQuery datepicker 不显示绑定日期

Question

This is my jquery datepicker

$(".monthPickerStart").datepicker({
      dateFormat: 'MM yy',
      changeMonth: true,
      changeYear: true,
      showButtonPanel: true,
      onClose: function (dateText, inst) {
                var month = $("#ui-datepicker-div .ui-datepicker-month :selected").val();
                var year = $("#ui-datepicker-div .ui-datepicker-year :selected").val();
                $(this).val($.datepicker.formatDate('d M,yy', new Date(year, month, 1)));
      }
});

$(".monthPickerStart").focus(function () 
      $(".ui-datepicker-calendar").hide();
      $("#ui-datepicker-div").position({
            my: "center top",
            at: "center bottom",
            of: $(this)
      });
});

aspx page code

<asp:TextBox ID="txt" class="monthPickerStart" Text='<%# Eval(Date", "{0:MMM/dd/yyyy}") %>' runat="server"></asp:TextBox>

Problem: If their is already a date in this text box and when I try to open datepicker, then it opens the current date, rather than opening the date which is present inside that textbox. for example date inside textbox = 5/13/2019, then when i try to open datepicker then it opens current date instead of 5/13/2019

Answer 1

根据这个http://api.jqueryui.com/datepicker/#utility-formatDate你必须正确设置日期格式因为你使用dateFormat: 'MM yy'来初始化 Datepicker，输入字段文本值应该包含默认值为May 2019上面链接中提到了所有支持的日期格式