在日期选择器中选择年份和月份时如何获取日期

Question

有没有办法在不点击完成按钮的情况下自动获取选择年份和月份的日期？

$(function() {
  $('.date-picker, .to').datepicker({
    changeMonth: true,
    changeYear: true,
    showButtonPanel: true,
    dateFormat: 'yy-mm-dd',
    onClose: function(dateText, inst) {
      $(this).datepicker('setDate', new Date(inst.selectedYear, inst.selectedMonth, 1));
      $('#to').datepicker('setDate', new Date(inst.selectedYear, inst.selectedMonth + 1, 0));
    }
  });
});

.ui-datepicker-calendar {
  display: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js" integrity="sha512-uto9mlQzrs59VwILcLiRYeLKPPbS/bT71da/OEBYEwcdNUk8jYIy+D176RYoop1Da+f9mvkYrmj5MCLZWEtQuA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<label for="startDate">Year/Month :</label>
<input name="startDate" id="startDate" class="date-picker" />
<input name="startDate" id="to" class="to" />

Answer 1

考虑以下示例。

$(function() {
  function setDate(target, year, month, string) {
    var myDate;
    if ($(target).is("#first")) {
      day = 1;
      myDate = $.datepicker.parseDate("yy-mm-dd", year + "-" + month + "-01");
    } else {
      myDate = new Date(year, month, 0);
    }
    if (string) {
      $(target).val($.datepicker.formatDate("yy-mm-dd", myDate));
    } else {
      $(target).datepicker("setDate", myDate);
    }
  }

  $('.date-picker').datepicker({
    changeMonth: true,
    changeYear: true,
    showButtonPanel: true,
    dateFormat: 'yy-mm-dd',
    onChangeMonthYear: function(yy, mm) {
      setDate(this, yy, mm, true);
    },
    onClose: function(dateText, inst) {
      if ($(this).is("#first")) {
        setDate("#last", inst.selectedYear, inst.selectedMonth + 1, true);
      }
    }
  });
});

.ui-datepicker-calendar {
  display: none;
}

<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-3.3.1.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<label for="startDate">Year/Month :</label>
<input id="first" class="date-picker" />
<input id="last" class="date-picker" />

如果用户更改了他们想要的月份和年份，然后点击离开，这将填充该字段，就像您在 onClose 中所做的一样。