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html - Bootstrap 导航栏切换不起作用(扩展)

转载 作者：行者123 更新时间：2023-12-04 08:37:25 25 4
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我正在努力使用由 HTML CSS 和 Bootstrap 制成的导航栏。我在 youtube 上学习了一些教程，但是当屏幕尺寸减小到最小时，我似乎可以展开切换按钮。因为我要开始一个新元素，所以我使用 HTML CSS 和 Bootstrap 应用了所有这些，并在我的本地目录中打开了 HTML 文件。请帮我!我已经被困了几个小时。
下面是我做的代码:

<head>
    <meta charset="UTF-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
    <meta http-equiv="X-UA-Compatible" content="ie=edge"/>
    <script src="https://code.jquery.com/jquery-3.5.1.js"></script>
    <link rel="stylesheet" href="bootstrap.min.css"/>
    <link rel="stylesheet" href="title.css" />
    <title>Document</title>
</head>
<body>
   <nav class="navbar navbar-expand-md navbar-light bg-light sticky-top">
     <button class="navbar-toggler" data-toggle="collapse" data-target="#collapse_target">
       <span class="navbar-toggler-icon></span>
     </button>

     <div class="collapse navbar-collapse" id="collapse_target">
       <a class="navbar-brand>Logo</a>

       <ul class="navbar-nav">
         <li class="nav-item">
           <a class="nav-link href="#">Link 1</a>
         </li>
         <li class="nav-item">
           <a class="nav-link href="#">Link 2</a>
         </li>
         <li class="nav-item">
           <a class="nav-link href="#">Link 3</a>
         </li>
      </ul>
    </div>
   </nav>
</body>
我的结果如下:
enter image description here
我将获得如上所示的切换器图标，但我无法单击它并获得“主页”、“类别”、“关于”和“联系方式”。我不知道我哪里做错了。
感谢您的时间。

最佳答案

你错过了 JS，他们的 CDN 可以在 getbootstrap.com 上找到
我在下面添加了两个响应式导航栏。这些代码来自 getbootstrap.com

<!doctype html>
<html lang="en">
  <head>
    <!-- Required 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://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">

    <title>Document</title>
  </head>
  <body>
    <nav class="navbar navbar-expand-sm navbar-dark bg-dark">
  <a class="navbar-brand" href="#">Expand at sm</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample03" aria-controls="navbarsExample03" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse" id="navbarsExample03">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item active">
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
      </li>
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="dropdown03" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
        <div class="dropdown-menu" aria-labelledby="dropdown03">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
    </ul>
    <form class="form-inline my-2 my-md-0">
      <input class="form-control" type="text" placeholder="Search">
    </form>
  </div>
</nav>

<hr class"m-5">
<nav class="navbar navbar-expand-xl navbar-dark bg-dark">
  <a class="navbar-brand" href="#">Expand at xl</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample06" aria-controls="navbarsExample06" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse" id="navbarsExample06">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item active">
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
      </li>
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="dropdown06" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
        <div class="dropdown-menu" aria-labelledby="dropdown06">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
    </ul>
    <form class="form-inline my-2 my-md-0">
      <input class="form-control" type="text" placeholder="Search">
    </form>
  </div>
</nav>
    <!-- Optional JavaScript; choose one of the two! -->

    <!-- Option 1: jQuery and Bootstrap Bundle (includes Popper) -->
    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx" crossorigin="anonymous"></script>

    
    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.min.js" integrity="sha384-w1Q4orYjBQndcko6MimVbzY0tgp4pWB4lZ7lr30WKz0vr/aWKhXdBNmNb5D92v7s" crossorigin="anonymous"></script>

  </body>
</html>

关于html - Bootstrap 导航栏切换不起作用(扩展)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/64735464/

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