jQuery Date Picker - 如果用户没有选择开始日期，则禁用所有结束日期

In My date picker I have certain constraints

在我的日期选择器中，我有一些限制

1. End date should not be earlier than Start date -Done
2. 结束日期不应早于开始日期-Done
3. Now my problem is User should not able to select End date without selecting the Start date
4. 现在我的问题是用户不应该选择结束日期而不选择开始日期

My Jquery for datepicker:

我的Jquery为datepicker：

var dateToday = new Date(); 
$( function() {
  $( "#datepicker1" ).datepicker({
    changeMonth: true,
    changeYear: true,
    dateFormat:'dd-M-yy',
    //   minDate: dateToday,
    onClose: function (selected) {
      $("#end").datepicker("option", "minDate", selected);
    }
  });
  $( "#end" ).datepicker({
    changeMonth: true,
    changeYear: true,
    dateFormat:'dd-M-yy',
    // minDate: dateToday,
    onClose: function (selected) {
      $("#datepicker1").datepicker("option", "maxDate", selected);
    }
  });
}); 

2 个解决方案

#1

See the changes in:

查看以下更改：

onClose: function (selected) {
  if(selected.length <= 0) {
      // selected is empty
      $("#end").datepicker('disable')
  } else {
      $("#end").datepicker('enable');
  }
  $("#end").datepicker("option", "minDate", selected);
}

Demo here to give you an idea. Adopt to your needs.

在这里演示给你一个想法。采纳您的需求。

var dateToday = new Date(); 
$( function() {
  $( "#datepicker1" ).datepicker({
    changeMonth: true,
    changeYear: true,
    dateFormat:'dd-M-yy',
    //   minDate: dateToday,
    onClose: function (selected) {
      if(selected.length <= 0) {
          // selected is empty
          $("#end").datepicker('disable');
      } else {
          $("#end").datepicker('enable');
      }
      $("#end").datepicker("option", "minDate", selected);
    }
  });
  $( "#end" ).datepicker({
    changeMonth: true,
    changeYear: true,
    dateFormat:'dd-M-yy',
    // minDate: dateToday,
    onClose: function (selected) {
      if(selected.length <= 0) {
          // selected is empty
          $("#datepicker1").datepicker('disable');
      } else {
          $("#datepicker1").datepicker('enable');
      }
      $("#datepicker1").datepicker("option", "maxDate", selected);
    }
  });
}); 

<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/datepicker/0.6.4/datepicker.css">
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>



<input id="datepicker1" type="text">
<input id="end" type="text">

#2

In first you should disable the #end datepicker by default. Then modify the onClick handler of the #datepicker1 as following:

首先，您应该默认禁用#end datepicker。然后修改#datepicker1的onClick处理程序，如下所示：

onClose: function (selected) { 
  $("#end")
    .datepicker("option", "minDate", selected)
    .datepicker("option", "disabled", !selected);
}