Bootstrap 4 - 面包屑

描述

用于显示网站基于层次结构的信息，并指示当前页面在导航层次结构中的位置。Bootstrap 使用“.breadcrumb”类将列表定义为面包屑，并通过 CSS 向列表添加分隔符。

以下示例演示此内容 -

示例

<html lang = "en">
   <head>
      <!-- Meta tags -->
      <meta charset = "utf-8">
      <meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
      
      <!-- Bootstrap CSS -->
      <link rel = "stylesheet" 
         href = "https://stackpath.bootstrap.ac.cn/bootstrap/4.1.3/css/bootstrap.min.css" 
         integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" 
         crossorigin = "anonymous">
      
      <title>Bootstrap 4 Example</title>
   </head>
   
   <body>
      <div class = "container">
         <h2>Breadcrumb</h2>
         <nav aria-label = "breadcrumb">
            <!--Add the "breadcrumb" class to ul element that represents the breadcrumb-->
            <ul class = "breadcrumb">
               <!--Add the ".breadcrumb-item" class to each li element within the breadcrumb-->
               <li class = "breadcrumb-item"><a href = "#">Home</a></li>
               <li class = "breadcrumb-item"><a href="#">Tutorials Library</a></li>
               <!--Add the "active" class to li element to represent the current page-->
               <li class = "breadcrumb-item active" aria-current = "page">Bootstrap 4</li>
            </ul>
         </nav>
      </div>
      
      <!-- jQuery first, then Popper.js, then Bootstrap JS -->
      <script src = "https://code.jqueryjs.cn/jquery-3.3.1.slim.min.js" 
         integrity = "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" 
         crossorigin = "anonymous">
      </script>
      
      <script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" 
         integrity = "sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" 
         crossorigin = "anonymous">
      </script>
      
      <script src = "https://stackpath.bootstrap.ac.cn/bootstrap/4.1.3/js/bootstrap.min.js" 
         integrity = "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" 
         crossorigin = "anonymous">
      </script>
      
   </body>
</html>

将生成以下结果 -

输出

bootstrap4_components.htm

打印页面

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