Bootstrap导航

可以在 ul 元素上添加 .nav类，在每个 li 选项上添加 .nav-item 类，在每个链接上添加 .nav-link 类:

基本的导航

<div class="container mt-3">
      <h2>导航</h2>
      <p>简单的水平导航:</p>
      <ul class="nav">
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled" href="#">Disabled</a>
        </li>
      </ul>
    </div>

导航对齐方式

默认是左对齐，使用justify-content-center居中对齐，使用justify-content-end则是右对齐

	<div class="container mt-3">
      <h2>导航</h2>
      <p>左对齐导航 (默认):</p>
      <ul class="nav">
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled" href="#">Disabled</a>
        </li>
      </ul>
      
      <p class="text-center">居中对齐导航:</p>
      <ul class="nav justify-content-center">
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled" href="#">Disabled</a>
        </li>
      </ul>
        
      <p class="text-end">右对齐导航:</p>
      <ul class="nav justify-content-end">
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled" href="#">Disabled</a>
        </li>
      </ul>
    </div>

垂直排列

<ul class="nav flex-column">

导航选项卡

使用 .nav-tabs 类可以将导航转化为选项卡。然后对于选中的选项使用 .active 类来标记。

<div class="container mt-3">
      <h2>选项卡</h2>
      <p>选项卡导航:</p>
      <ul class="nav nav-tabs">
        <li class="nav-item">
          <a class="nav-link active" href="#">Active</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled" href="#">Disabled</a>
        </li>
      </ul>
    </div>

胶囊导航

.nav-pills类可以将导航项设置成胶囊形状。

<div class="container mt-3">
  <h2>胶囊</h2>
  <p>胶囊导航:</p>
  <ul class="nav nav-pills">
    <li class="nav-item">
      <a class="nav-link active" href="#">Active</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#">Link</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#">Link</a>
    </li>
    <li class="nav-item">
      <a class="nav-link disabled" href="#">Disabled</a>
    </li>
  </ul>
</div>

导航等宽

.nav-justified 类可以设置导航项齐行等宽显示。

    
    <div class="container mt-3">
      <h2>导航等宽</h2>
      <p>.nav-justified 类可以设置导航项齐行等宽显示。</p>
      <ul class="nav nav-pills nav-justified">
        <li class="nav-item">
          <a class="nav-link active" href="#">Active</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled" href="#">Disabled</a>
        </li>
      </ul><br>
    
      <p>Justified tabs:</p>
      <ul class="nav nav-tabs nav-justified">
        <li class="nav-item">
          <a class="nav-link active" href="#">Active</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled" href="#">Disabled</a>
        </li>
      </ul>
    </div>

胶囊下拉导航

父级dropdown-menu子集dropdown-item实现下拉

<div class="container mt-3">
  <h2>胶囊导航带下拉菜单</h2>
  <ul class="nav nav-pills">
    <li class="nav-item">
      <a class="nav-link active" href="#">Active</a>
    </li>
    <li class="nav-item dropdown">
      <a class="nav-link dropdown-toggle" data-bs-toggle="dropdown" href="#">Dropdown</a>
      <ul class="dropdown-menu">
        <li><a class="dropdown-item" href="#">Link 1</a></li>
        <li><a class="dropdown-item" href="#">Link 2</a></li>
        <li><a class="dropdown-item" href="#">Link 3</a></li>
      </ul>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#">Link</a>
    </li>
    <li class="nav-item">
      <a class="nav-link disabled" href="#">Disabled</a>
    </li>
  </ul>
</div>

动态切换选项卡

可以在每个链接上添加 data-bs-toggle=“tab” 属性。 然后在每个选项对应的内容的上添加 .tab-pane 类，对应选项卡的内容的 div 标签使用 .tab-content 类 。

如果你希望有淡入效果可以在 .tab-pane 后添加 .fade类:

<div class="container mt-3">
  <h2>选项卡切换</h2>
  <br>
  <!-- Nav tabs -->
  <ul class="nav nav-tabs" role="tablist">
    <li class="nav-item">
      <a class="nav-link active" data-bs-toggle="tab" href="#home">Home</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" data-bs-toggle="tab" href="#menu1">Menu 1</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" data-bs-toggle="tab" href="#menu2">Menu 2</a>
    </li>
  </ul>

  <!-- Tab panes -->
  <div class="tab-content">
    <div id="home" class="container tab-pane active"><br>
      <h3>HOME</h3>
      <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
    </div>
    <div id="menu1" class="container tab-pane fade"><br>
      <h3>Menu 1</h3>
      <p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
    </div>
    <div id="menu2" class="container tab-pane fade"><br>
      <h3>Menu 2</h3>
      <p>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam.</p>
    </div>
  </div>
</div>

胶囊动态选项卡

<div class="container mt-3">
  <h2>胶囊选项卡切换</h2>
  <br>
  <!-- Nav pills -->
  <ul class="nav nav-pills" role="tablist">
    <li class="nav-item">
      <a class="nav-link active" data-bs-toggle="pill" href="#home">Home</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" data-bs-toggle="pill" href="#menu1">Menu 1</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" data-bs-toggle="pill" href="#menu2">Menu 2</a>
    </li>
  </ul>

  <!-- Tab panes -->
  <div class="tab-content">
    <div id="home" class="container tab-pane active"><br>
      <h3>HOME</h3>
      <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
    </div>
    <div id="menu1" class="container tab-pane fade"><br>
      <h3>Menu 1</h3>
      <p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
    </div>
    <div id="menu2" class="container tab-pane fade"><br>
      <h3>Menu 2</h3>
      <p>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam.</p>
    </div>
  </div>
</div>