Bootstrap 5：轮播

轮播/幻灯片

轮播是循环播放元素的幻灯片：

如何创建轮播

以下示例展示了如何创建带有指示器和控件的基本轮播：

例子

<!-- Carousel -->
<div id="demo" class="carousel slide" data-bs-ride="carousel">
  <!-- Indicators/dots -->
  <div class="carousel-indicators">
    <button type="button" data-bs-target="#demo" data-bs-slide-to="0" class="active"></button>
    <button type="button" data-bs-target="#demo" data-bs-slide-to="1"></button>
    <button type="button" data-bs-target="#demo" data-bs-slide-to="2"></button>
  </div>
  <!-- The slideshow/carousel -->
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="la.jpg" alt="Los Angeles" class="d-block w-100">
    </div>
    <div class="carousel-item">
      <img src="chicago.jpg" alt="Chicago" class="d-block w-100">
    </div>
    <div class="carousel-item">
      <img src="ny.jpg" alt="New York" class="d-block w-100">
    </div>
  </div>
  <!-- Left and right controls/icons -->
  <button class="carousel-control-prev" type="button" data-bs-target="#demo" data-bs-slide="prev">
    <span class="carousel-control-prev-icon"></span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#demo" data-bs-slide="next">
    <span class="carousel-control-next-icon"></span>
  </button>
</div>

自己尝试一下→

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<!-- Carousel -->
<div id="demo" class="carousel slide" data-bs-ride="carousel">

  <!-- Indicators/dots -->
  <div class="carousel-indicators">
    <button type="button" data-bs-target="#demo" data-bs-slide-to="0" class="active"></button>
    <button type="button" data-bs-target="#demo" data-bs-slide-to="1"></button>
    <button type="button" data-bs-target="#demo" data-bs-slide-to="2"></button>
  </div>
  
  <!-- The slideshow/carousel -->
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="la.jpg" alt="Los Angeles" class="d-block" style="width:100%">
    </div>
    <div class="carousel-item">
      <img src="chicago.jpg" alt="Chicago" class="d-block" style="width:100%">
    </div>
    <div class="carousel-item">
      <img src="ny.jpg" alt="New York" class="d-block" style="width:100%">
    </div>
  </div>
  
  <!-- Left and right controls/icons -->
  <button class="carousel-control-prev" type="button" data-bs-target="#demo" data-bs-slide="prev">
    <span class="carousel-control-prev-icon"></span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#demo" data-bs-slide="next">
    <span class="carousel-control-next-icon"></span>
  </button>
</div>

<div class="container-fluid mt-3">
  <h3>Carousel Example</h3>
  <p>The following example shows how to create a basic carousel with indicators and controls.</p>
</div>

</body>
</html>

示例解释

上面示例中每个类的作用的描述：

.carousel: 创建一个轮播
.carousel-indicators: 添加轮播指示器。这些是每张幻灯片底部的小点（指示轮播中有多少张幻灯片，以及用户当前正在查看哪张幻灯片）
.carousel-inner: 将幻灯片添加到轮播中
.carousel-item: 指定每张幻灯片的内容
.carousel-control-prev: 向轮播添加左（上一页）按钮，允许用户在幻灯片之间返回
.carousel-control-next: 向轮播添加向右（下一页）按钮，允许用户在幻灯片之间前进
.carousel-control-prev-icon: 与 .carousel-control-prev 一起使用来创建“上一个”按钮
.carousel-control-next-icon: 与 .carousel-control-next 一起使用来创建“下一个”按钮
.slide: 从一个项目滑动到下一个项目时添加 CSS 过渡和动画效果。如果您不想要这种效果，请删除此类

向幻灯片添加标题

Los Angeles

We had such a great time in LA!

Chicago

Thank you, Chicago!

New York

We love the Big Apple!

在每个 <div class="carousel-item">< 内的 <div class="carousel-caption"> 内添加元 为每张幻灯片创建标题：

例子

<div class="carousel-item">
  <img src="la.jpg" alt="Los Angeles">
  <div class="carousel-caption">
    <h3>Los Angeles</h3>
    <p>We had such a great time in LA!</p>
  </div>
</div>