使用 pikaday 日期选择器设置日期范围

Question

我有一个预订表格，我只需要两个输入#checkin 和 #checkout，这就是为什么我使用 datepicker 和 daterange 一切正常几乎一件事是我如何在两个日期之间只选择 15 天？

顺便说一句，我使用的是Pikaday datepicker

$(document).ready(function() {

  $('.flexdatalist').flexdatalist({
    minLength: 0,
    searchContain: true,
  }).on('select:flexdatalist', function() {
    $('#checkin').trigger("click");
  });

  assignPicker = function(id, whenClosed) {
    if (typeof whenClosed !== 'function') {
      whenClosed = null;
    }

    return new Pikaday({
      numberOfMonths: 2,
      field: document.getElementById(id),
      format: "DD.MM.YYYY",
      minDate: new Date(),
      firstDay: 1,
      maxDate: new Date(2020, 12, 31),
      onSelect: function() {
        e = this.getDate();
      },
      onSelect: whenClosed
    });
  }

  assignPicker('checkin', function() {
    $('#checkout').trigger("click");
  });
  assignPicker('checkout', function() {
    $('#select').trigger("click");
  });

});

 body {
            padding: 30px;
        }
        input,
        select {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
        }

  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/pikaday/1.5.1/css/pikaday.min.css" />
  <link rel="stylesheet" href="https://cdn.anitur.com.tr/example/flexdatalist/flexdatalist.css" />




  <div class="container">


    <div class="row">
      <div class="col-lg-3 col-md-3 col-sm-3">
        <input type="text" name="" class='flexdatalist' data-min-length='1' list='languages' name='language' />
        <datalist id="languages">
          <option value="PHP">PHP</option>
          <option value="JavaScript">JavaScript</option>
          <option value="Cobol">Cobol</option>
          <option value="C#">C#</option>
          <option value="C++">C++</option>
          <option value="Java">Java</option>
          <option value="Pascal">Pascal</option>
          <option value="FORTRAN">FORTRAN</option>
          <option value="Lisp">Lisp</option>
          <option value="Swift">Swift</option>
          <option value="ActionScript">ActionScript</option>
        </datalist>
      </div>
      <div class="col-lg-3 col-md-3 col-sm-3">
          <input type="text" id="checkin" />
      </div>
      <div class="col-lg-3 col-md-3 col-sm-3">

          <input type="text"  id="checkout" />
      </div>
      <div class="col-lg-3 col-md-3 col-sm-3">

<form action="" method="get">
        <select name="select" id="select">
          <option value="0">Choose</option>
          <option value="1">1</option>
          <option value="2">2</option>
          <option value="3">3</option>
          <option value="4">4</option>
          <option value="5">5</option>
          <option value="6">6</option>
          <option value="7">7</option>
        </select>
      </form>
      </div>
    </div>


  </div>



  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
  
    <script src="https://cdnjs.cloudflare.com/ajax/libs/pikaday/1.5.1/pikaday.min.js"></script>

  <script src="https://cdn.anitur.com.tr/example/flexdatalist/flexdatalist.js"></script>

if you can check it out on codepen instead of stackoverflow snippet

Answer 1

您可以保存对结帐选择器的引用，然后将函数绑定到签入选择器的onSelect 方法并相应地调整结帐日期选择器。您可以（并且可能应该）加载 Moment.js 以使日期计算更容易。 Pikaday 的 format 属性（您正在使用）没有它甚至都无法工作。

$(document).ready(function() {

  $('.flexdatalist').flexdatalist({
    minLength: 0,
    searchContain: true,
  }).on('select:flexdatalist', function() {
    $('#checkin').trigger("click");
  });

  assignPicker = function(id, whenClosed) {
    if (typeof whenClosed !== 'function') {
      whenClosed = null;
    }

    return new Pikaday({
      numberOfMonths: 2,
      field: document.getElementById(id),
      format: "DD.MM.YYYY",
      minDate: new Date(),
      firstDay: 1,
      maxDate: new Date(2020, 12, 31),
      onSelect: whenClosed
    });
  }

  var checkoutPicker = assignPicker('checkout', function() {
    $('#select').trigger("click");
  });

  var checkinPicker = assignPicker('checkin', function() {
    var maxDate = this.getMoment().add(15, 'days');
    checkoutPicker.setMaxDate(maxDate.toDate());
    checkoutPicker.setMinDate(this.getDate()); // min date of checkout = checkin
    checkoutPicker.setDate(null);
    $('#checkout').trigger("click"); // trigger checkout picker
  });

});

http://codepen.io/anon/pen/apgGpN