Bootstrap Carousel：更改滑块下的部分

Question

所以我有典型的 Bootstrap Carousel，有三到四张幻灯片，我遇到的问题是我希望在新幻灯片出现时更改滑块下方的部分。我尝试隐藏该部分并使用“折叠”显示正确的部分，如下所示：Hide div by default and show it on click with bootstrap

<a href="#Foo" class="btn btn-default" data-toggle="collapse">Toggle Foo</a>

<div id="Foo" class="collapse">
    This div (Foo) is hidden by default
</div>

...下一张幻灯片将是“foo2”，然后是“foo3”等...问题是这似乎不适用于多张幻灯片。

理想情况下，我希望底部淡出，然后使用与幻灯片 id 对应的 div id 淡入。

这可能吗？

Answer 1

这个简单的代码根据活动幻灯片显示和隐藏 Bootstrap Carousel 下的文本。

您可以按类for-slide- 设置可折叠的divs。在我的示例幻灯片 4 中没有可折叠的 div。幻灯片 1 和 3 使用相同的 div。

请检查结果。

$( document ).ready(function() {
  $('#myCarousel').on('slide.bs.carousel', function (e) {
    var forSlide = $('.for-slide-' + $(e.relatedTarget).index());
    if ( !forSlide.hasClass('in') ) {
      $('#collapseGroup>.collapse.in').collapse('hide');
      forSlide.collapse('show');
    }
  })
});

@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css');

.carousel-inner > .item > img {
  width: 100%;
}

.container {
  padding-top: 20px;
  padding-bottom: 20px;
}

.well {
  margin: 20px 0 0;
}

<div class="container">
  <div id="myCarousel" class="carousel slide" data-ride="carousel">
    <!-- Indicators -->
    <ol class="carousel-indicators">
      <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
      <li data-target="#myCarousel" data-slide-to="1"></li>
      <li data-target="#myCarousel" data-slide-to="2"></li>
      <li data-target="#myCarousel" data-slide-to="3"></li>
      <li data-target="#myCarousel" data-slide-to="4"></li>
    </ol>

    <!-- Wrapper for slides -->
    <div class="carousel-inner" role="listbox">
      <div class="item active">
        <img class="img-responsive" src="http://placehold.it/1920x650&text=Slide%200" alt="Slide 0">
        <div class="carousel-caption">
          <h3>Caption 0</h3>
        </div>
      </div>
      <div class="item">
        <img class="img-responsive" src="http://placehold.it/1920x650&text=Slide%201" alt="Slide 1">
        <div class="carousel-caption">
          <h3>Caption 1</h3>
        </div>
      </div>
      <div class="item">
        <img class="img-responsive" src="http://placehold.it/1920x650&text=Slide%202" alt="Slide 2">
        <div class="carousel-caption">
          <h3>Caption 2</h3>
        </div>
      </div>
      <div class="item">
        <img class="img-responsive" src="http://placehold.it/1920x650&text=Slide%203" alt="Slide 3">
        <div class="carousel-caption">
          <h3>Caption 3</h3>
        </div>
      </div>
      <div class="item">
        <img class="img-responsive" src="http://placehold.it/1920x650&text=Slide%204" alt="Slide 4">
        <div class="carousel-caption">
          <h3>Caption 4</h3>
        </div>
      </div>
    </div>

    <!-- Controls -->
    <a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">
      <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
      <span class="sr-only">Previous</span>
    </a>
    <a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">
      <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
      <span class="sr-only">Next</span>
    </a>
  </div>

  <div id="collapseGroup">
    <div class="collapse for-slide-0 in">
      <div class="well">
        <h3>Text for Slide 0</h3>
      </div>
    </div>
    <div class="collapse for-slide-1 for-slide-3">
      <div class="well">
        <h3>Text for Slides 1 and 3</h3>
      </div>
    </div>
    <div class="collapse for-slide-2">
      <div class="well">
        <h3>Text for Slide 2</h3>
      </div>
    </div>
  </div>
</div>

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