ブートストラップの .nav と .navbar の違いの詳細な説明

ナビゲーション バーは、Bootstrap Web サイトの優れた機能であり、顕著な機能です。ナビゲーション バーは、アプリまたは Web サイトのナビゲーション ヘッダーの応答性の高い基本コンポーネントとして機能します。ナビゲーション バーは、モバイル ビューポートでは折りたたまれ、使用可能なビューポートの幅が増加するにつれて水平に広がります。 Bootstrap ナビゲーション バーの中核となるナビゲーション バーには、サイト名と基本的なナビゲーション定義スタイルが含まれています。この記事では、ブートストラップ ナビゲーション バーの .nav と .navbar の違いについて詳しく説明します。これが非常に優れていると思います。皆さんの参考になれば幸いです。

1. ul と li で構成される単純なナビゲーション:

<ul class="nav nav-pills justify-content-center bg-dark nav-dark">
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">2</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">3</a>
    </li>
  </ul>

 

//解析：.nav .nav-item .nav-link表示ul li是导航——.nav-pills表示胶囊状导航——.bg-dark/.nav-dark表示黑底白字——.justify-content-center表示导航栏在浏览器上居中显示

はブラウザ上で次のように表示されます:

ブラウザ ウィンドウが縮小されると、次のように表示されます:

2. ナビゲーション バー - < ;nav> ラベルの Class="navbar navbar-expand-sm" —

の class="navbar-nav" —
• の class="nav-item"

  コードは次のとおりです。

<nav class="navbar navbar-expand-sm bg-dark navbar-dark">
  <ul class="navbar-nav">
    <li class="nav-item active">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>  
  </ul>
</nav>

通常のウィンドウ 次のように表示されます:

縮小されたウィンドウが 576 ピクセル未満の場合:

3. ナビゲーション バーを折りたたむ

ウィンドウが 576 ピクセル未満の場合、単なるプログラミング垂直ウィンドウではありませんナビゲーション; ボタン ボタンとして表示されます。ナビゲーション リンク 非表示にする場合は、ボタンをクリックしてください:

<nav class="navbar navbar-expand-sm bg-dark navbar-dark fixed-top">
  <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="navbar-brand">
      <img src="" alt="logo" style="width:70px;height:30px;">
  </a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsible">
    <span class="navbar-toggler-icon"></span>
  </button>
  <p class="collapse navbar-collapse" id="collapsible">
  <ul class="navbar-nav">
    <li class="nav-item active">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>  
  </ul>
  
</nav>

//注: .navbar-brand は、ウィンドウが 576 より大きい場合です。 、次のように表示されます:

ウィンドウが 576 より小さい場合、次のように表示されます:

4. 検索ボックスを表すフォームをナビゲーション バーに追加します。 ? ? ? ? 】

コードは以下の通りです:

<nav class="navbar navbar-expand-sm bg-dark navbar-dark fixed-top">
  <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="navbar-brand">
      <img src="" alt="logo" style="width:70px;height:30px;">
  </a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsible">
    <span class="navbar-toggler-icon"></span>
  </button>
  <p class="collapse navbar-collapse" id="collapsible">
  <ul class="navbar-nav">
    <li class="nav-item active">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>
    <li class="nav-item">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-link">link1</a>
    </li>  
  </ul>
  <form class="form-inline">
        <p class="input-group">
          <span class="input-group-addon">@</span>
          <input list="dl" type="text" class="form-control" placeholder="Search"/>
          <datalist id="dl">
            <option value="IE"></option>
            <option value="Firefox"></option>
            <option value="chrome"></option>
            <option value="safari"></option>
          </datalist>
        </p>
        
        <button class="btn btn-success" type="submit">search</button>
      </form>
</nav>

写真のように、ナビゲーションバーのフォームを右揃えにして一番右に移動させるにはどうすればよいでしょうか？ ? ? ? ? float:eight も機能するはずです。 。

emmmm....私は上記の解決策を知っています。グリッドシステムを使用して、ulとliをそれぞれ左側に、フォームを右側に配置してから、フォームFloatを追加します。そうです、

コードは次のとおりです:

<p class="container-fluid">
  <p class="row">
    <!-- 导航栏 -->
    <nav class="navbar fixed-top navbar-expand-sm bg-dark navbar-dark">
      <p class="col-lg-4">
      <ul class="navbar-nav">
        <li class="nav-item">
          <a class="nav-link" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >link1</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >link2</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >link3</a>
        </li>
      </ul>
      </p>
<!-- 导航栏表单与按钮 -->
    <p class="col-lg-8">
      <form class="form-inline" style="float:right;">
        <p class="input-group">
          <span class="input-group-addon">@</span>
          <input list="dl" type="text" class="form-control" placeholder="Search"/>
          <datalist id="dl">
            <option value="IE"></option>
            <option value="Firefox"></option>
            <option value="chrome"></option>
            <option value="safari"></option>
          </datalist>
          <button class="btn btn-success" type="submit">search</button>
        </p>              
      </form>
      </p>      
    </nav>
    </p>
      </p>

皆さんは覚えましたか? Bootstrap ナビゲーション バーの .nav と .navbar の違いについては、皆さんもよく理解していると思います。この記事が役立つと思われた場合は、すぐに保存してください。

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