如何创建轮播

以下实例创建了一个简单的图片轮播效果 ：

<div id="demo" class="carousel slide" data-ride="carousel">
 
  <!-- 指示符 -->
  <ul class="carousel-indicators">
    <li data-target="#demo" data-slide-to="0" class="active"></li>
    <li data-target="#demo" data-slide-to="1"></li>
    <li data-target="#demo" data-slide-to="2"></li>
  </ul>
 
  <!-- 轮播图片 -->
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="https://img11.360buyimg.com/da/jfs/t14635/313/537214634/188351/d5d23fcb/5a30da83Nbc124380.jpg">
    </div>
    <div class="carousel-item">
      <img src="https://img11.360buyimg.com/da/jfs/t14419/276/543521012/97503/a0c34b9/5a310106Nbc61ad65.jpg">
    </div>
    <div class="carousel-item">
      <img src="https://img12.360buyimg.com/da/jfs/t12040/365/2282518742/197444/b45a2120/5a38e356Nfb55a3b3.jpg">
    </div>
  </div>
 
  <!-- 左右切换按钮 -->
  <a class="carousel-control-prev" href="#demo" data-slide="prev">
    <span class="carousel-control-prev-icon"></span>
  </a>
  <a class="carousel-control-next" href="#demo" data-slide="next">
    <span class="carousel-control-next-icon"></span>
  </a>
 
</div>

轮播图片上添加描述

<div class="carousel-item">
  <img src="https://img11.360buyimg.com/da/jfs/t14419/276/543521012/97503/a0c34b9/5a310106Nbc61ad65.jpg">
  <div class="carousel-caption">
    <h3>第一张图片描述标题</h3>
    <p>描述文字!</p>
  </div>
</div>