javascript - 完整日历未在 Bootstrap 选项卡中自动加载？

Question

我在使用 Bootstrap 选项卡的旅游网站上工作。在第一个选项卡中有一些内容，在第二个选项卡中我显示了一个完整的日历 js。一切正常，但当我在第一个选项卡中显示完整日历时，它工作正常，但当我在第二个选项卡中显示它时，它不会自动加载，而是当我点击月份按钮或左右箭头时加载。

无法找出问题所在。完整代码如下:

  document.addEventListener('DOMContentLoaded', function() {
  var calendarEl = document.getElementById('calendar');

  var calendar = new FullCalendar.Calendar(calendarEl, {
    plugins: [ 'interaction', 'dayGrid', 'timeGrid' ],
    defaultView: 'dayGridMonth',
    defaultDate: '2019-08-07',
    header: {
      left: 'prev,next today',
      center: 'title',
      right: 'dayGridMonth,timeGridWeek,timeGridDay'
    },
    events: [
      {
        title: 'All Day Event',
        start: '2019-08-01'
      },
      {
        title: 'Long Event',
        start: '2019-08-07',
        end: '2019-08-10'
      },
      {
        groupId: '999',
        title: 'Repeating Event',
        start: '2019-08-09T16:00:00'
      },
      {
        groupId: '999',
        title: 'Repeating Event',
        start: '2019-08-16T16:00:00'
      },
      {
        title: 'Conference',
        start: '2019-08-11',
        end: '2019-08-13'
      },
      {
        title: 'Meeting',
        start: '2019-08-12T10:30:00',
        end: '2019-08-12T12:30:00'
      },
      {
        title: 'Lunch',
        start: '2019-08-12T12:00:00'
      },
      {
        title: 'Meeting',
        start: '2019-08-12T14:30:00'
      },
      {
        title: 'Birthday Party',
        start: '2019-08-13T07:00:00'
      },
      {
        title: 'Click for Google',
        url: 'http://google.com/',
        start: '2019-08-28'
      }
    ]
  });

  calendar.render();
 });  

html, body {
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica Neue, Helvetica, sans-serif;
  font-size: 14px;
}

#calendar {
  max-width: 900px;
  margin: 40px auto;
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/>
<link href="https://unpkg.com/@fullcalendar/core@4.3.1/main.min.css" rel="stylesheet"/>
<link href="https://unpkg.com/@fullcalendar/daygrid@4.3.0/main.min.css" rel="stylesheet"/>
<link href="https://unpkg.com/@fullcalendar/timegrid@4.3.0/main.min.css" rel="stylesheet"/>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/core@4.3.1/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/interaction@4.3.0/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/daygrid@4.3.0/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/timegrid@4.3.0/main.min.js"></script>


<ul class="nav nav-tabs">
  <li class="active"><a data-toggle="tab" href="#home">Home</a></li>
  <li><a data-toggle="tab" href="#menu1">Menu 1</a></li>
</ul>

<div class="tab-content">
  <div id="home" class="tab-pane fade in active">
    <h3>HOME</h3>
    <p>Some content.</p>
  </div>
  <div id="menu1" class="tab-pane fade">
    <h3>Calendar not loaded automatically :(</h3>
    <div id='calendar'></div>
  </div>
</div>

Answer 1

如果看不到 div(例如 display: none;)，FullCalendar 将不会加载。

另一种方法是监听 #menu1，当它可见时，运行 calendar.render()。

或者，您可以启动将日历作为可见屏幕的应用程序，如下所示:

<div class="tab-content">
  <div id="home" class="tab-pane fade in ">
    <h3>HOME</h3>
    <p>Some content.</p>
  </div>
  <div id="menu1" class="tab-pane fade in active">
    <h3>Calendar not loaded automatically :(</h3>
    <div id='calendar'></div>
  </div>
</div>

 document.addEventListener('DOMContentLoaded', function() {
  var calendarButton = document.getElementById('calendarButton');
  var calendarEl = document.getElementById('calendar');

  var calendar = new FullCalendar.Calendar(calendarEl, {
    plugins: [ 'interaction', 'dayGrid', 'timeGrid' ],
    defaultView: 'dayGridMonth',
    defaultDate: '2019-08-07',
    header: {
      left: 'prev,next today',
      center: 'title',
      right: 'dayGridMonth,timeGridWeek,timeGridDay'
    },
    events: [
      {
        title: 'All Day Event',
        start: '2019-08-01'
      },
      {
        title: 'Long Event',
        start: '2019-08-07',
        end: '2019-08-10'
      },
      {
        groupId: '999',
        title: 'Repeating Event',
        start: '2019-08-09T16:00:00'
      },
      {
        groupId: '999',
        title: 'Repeating Event',
        start: '2019-08-16T16:00:00'
      },
      {
        title: 'Conference',
        start: '2019-08-11',
        end: '2019-08-13'
      },
      {
        title: 'Meeting',
        start: '2019-08-12T10:30:00',
        end: '2019-08-12T12:30:00'
      },
      {
        title: 'Lunch',
        start: '2019-08-12T12:00:00'
      },
      {
        title: 'Meeting',
        start: '2019-08-12T14:30:00'
      },
      {
        title: 'Birthday Party',
        start: '2019-08-13T07:00:00'
      },
      {
        title: 'Click for Google',
        url: 'http://google.com/',
        start: '2019-08-28'
      }
    ]
  });


calendar.render();

 });  

html, body {
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica Neue, Helvetica, sans-serif;
  font-size: 14px;
}

#calendar {
  max-width: 900px;
  margin: 40px auto;
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/>
<link href="https://unpkg.com/@fullcalendar/core@4.3.1/main.min.css" rel="stylesheet"/>
<link href="https://unpkg.com/@fullcalendar/daygrid@4.3.0/main.min.css" rel="stylesheet"/>
<link href="https://unpkg.com/@fullcalendar/timegrid@4.3.0/main.min.css" rel="stylesheet"/>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/core@4.3.1/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/interaction@4.3.0/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/daygrid@4.3.0/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/timegrid@4.3.0/main.min.js"></script>


<ul class="nav nav-tabs">
  <li ><a data-toggle="tab" href="#home">Home</a></li>
  <li><a id="calendarButton" data-toggle="tab" href="#menu1">Menu 1</a></li>
</ul>

<div class="tab-content">
  <div id="home" class="tab-pane fade in ">
    <h3>HOME</h3>
    <p>Some content.</p>
  </div>
  <div id="menu1" class="tab-pane fade in active">
    <h3>Calendar not loaded automatically :(</h3>
    <div id='calendar'></div>
  </div>
</div>