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首页 > 解决方案 > 辅助功能 - Bootstrap4 Carousel control tabbing 在使用键盘中的 tab 键时不会转到 carousel-caption div

html - 辅助功能 - Bootstrap4 Carousel control tabbing 在使用键盘中的 tab 键时不会转到 carousel-caption div

问题描述

PFB 就是一个例子，这里我用于 Bootstrap Carousel 控制。

https://www.w3schools.com/bootstrap/tryit.asp?filename=trybs_carousel2&stacked=h

这个例子工作正常，但是当我使用键盘上的 Tab 键时，控件不会继续在 div 内使用“carousel-caption”类锚定标签。

我尝试了锚标签的“tab-index”属性来设置标签，但标签无法正常工作。

我希望标签按如下方式工作：

谁能让我知道如何为

<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>
    </ol>

    <!-- Wrapper for slides -->
    <div class="carousel-inner">
        <div class="item active">
            <img src="C:\Users\user1\Desktop\Sample\video-bg-static1.png" alt="Los Angeles" style="width:100%;">
            <div class="carousel-caption">
                <h3>Los Angeles</h3>
                <a>LA is always so much fun!</a>
            </div>
        </div>

        <div class="item">
            <img src="C:\Users\user1\Desktop\Sample\video-bg-static2.png" alt="Chicago" style="width:100%;">
            <div class="carousel-caption">
                <h3>Chicago</h3>
                <a>Thank you, Chicago!</a>
            </div>
        </div>

        <div class="item">
            <img src="C:\Users\user1\Desktop\Sample\video-bg-static3.png" alt="New york" style="width:100%;">
            <div class="carousel-caption">
                <h3>New York</h3>
                <a>We love the Big Apple!</a>
            </div>
        </div>
    </div>

    <!-- Left and right controls -->
    <a class="left carousel-control" href="#myCarousel" data-slide="prev">
        <span class="glyphicon glyphicon-chevron-left"></span>
        <span class="sr-only">Previous</span>
    </a>
    <a class="right carousel-control" href="#myCarousel" data-slide="next">
        <span class="glyphicon glyphicon-chevron-right"></span>
        <span class="sr-only">Next</span>
    </a>
</div>

标签： htmlcsstwitter-bootstrapbootstrap-4bootstrap-carousel

解决方案

您不能在 上定义选项卡索引<li>，因此我们必须将我们的锚标记包装ul.carousel-indicators>li在一个锚标记内（它确实与选项卡索引一起使用）...

检查适用于相同示例并根据需要实现 tabIndex 的代码...

更新：根据提问者的评论，标签索引现在转到<p>每张幻灯片的标题下方，而不是轮播指示器；这些<a>标签的 href 将由用户更新...

.carousel-indicators .active {
  border-radius: 50%;
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>


<div class="container">
  <h2>Carousel Example</h2>
  <div id="myCarousel" class="carousel slide" data-ride="carousel">

    <!-- Wrapper for slides -->
    <div class="carousel-inner">

      <div class="item active">
        <img src="https://www.w3schools.com/bootstrap/la.jpg" alt="Los Angeles" style="width:100%;">
        <div class="carousel-caption">
          <h3>Los Angeles</h3>
          <a class="active" tabindex="2" href="#myCarousel" data-slide-to="0">
            <p>LA is always so much fun!</p>
          </a>
        </div>
      </div>

      <div class="item">
        <img src="https://www.w3schools.com/bootstrap/chicago.jpg" alt="Chicago" style="width:100%;">
        <div class="carousel-caption">
          <h3>Chicago</h3>
          <a class="" tabindex="3" href="#myCarousel" data-slide-to="1">
            <p>Thank you, Chicago!</p>
          </a>
        </div>
      </div>

      <div class="item">
        <img src="https://www.w3schools.com/bootstrap/ny.jpg" alt="New York" style="width:100%;">
        <div class="carousel-caption">
          <h3>New York</h3>
          <a class="" tabindex="4" href="#myCarousel" data-slide-to="2">
            <p>We love the Big Apple!</p>
          </a>
        </div>
      </div>

    </div>

    <!-- Indicators -->
    <ol class="carousel-indicators">
      <li class="" data-target="#myCarousel" data-slide-to="0">
      </li>
      <li class="" data-target="#myCarousel" data-slide-to="1">
      </li>
      <li class="" data-target="#myCarousel" data-slide-to="2">
      </li>
    </ol>

    <!-- Left and right controls -->
    <a class="left carousel-control" tabindex="1" href="#myCarousel" data-slide="prev">
      <span class="glyphicon glyphicon-chevron-left"></span>
      <span class="sr-only">Previous</span>
    </a>

    <a class="right carousel-control" tabindex="5" href="#myCarousel" data-slide="next">
      <span class="glyphicon glyphicon-chevron-right"></span>
      <span class="sr-only">Next</span>
    </a>
  </div>
</div>

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