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javascript - Bootstrap 4 Navbar 示例卡在移动模式

转载 作者：行者123 更新时间：2023-11-30 14:58:27 25 4
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现在我将浏览 Bootstrap Material 并尝试学习如何将它们的内容与我正在为 Django 元素做准备的 jinja2 文件一起使用。当我尝试复制并粘贴他们的示例代码时(特别是这个例子 http://getbootstrap.com/docs/4.0/components/navbar/ ) enter image description here在我的元素中它似乎正在工作但是没有一个下拉元素是响应的并且当它进入移动设备时它不会扩展。这是我使用我本地的 css 和 js 文件，所以我想我会使用 Jinja 网站上推荐的 cdn 文件。现在可以使用了，但是卡在了移动模式。我该如何解决这个问题？

这是我的来源:

<!DOCTYPE html>
<html lang="en">

<head>
	<title>My title</title>
	<meta character="utf-8" />
	{%load staticfiles %}
	<!-- <link rel='stylesheet' href="{% static 'css/bootstrap.min.css'%}" type='text/css' media="screen" > -->
	<!-- <script type="text/javascript" src="{% static 'js/bootstrap.min.js'%}"></script>  -->
	<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
</head>

<body class="body">


	<nav class="navbar navbar-expand-lg navbar-light bg-light">
	  <a class="navbar-brand" href="#">Navbar</a>
	  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
	    <span class="navbar-toggler-icon"></span>
	  </button>

	  <div class="collapse navbar-collapse" id="navbarSupportedContent">
	    <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 dropdown">
	        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
	          Dropdown
	        </a>
	        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
	          <a class="dropdown-item" href="#">Action</a>
	          <a class="dropdown-item" href="#">Another action</a>
	          <div class="dropdown-divider"></div>
	          <a class="dropdown-item" href="#">Something else here</a>
	        </div>
	      </li>
	      <li class="nav-item">
	        <a class="nav-link disabled" href="#">Disabled</a>
	      </li>
	    </ul>
	    <form class="form-inline my-2 my-lg-0">
	      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
	      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
	    </form>
	  </div>
	</nav>


	<div>
	{% block content%}
	{% endblock %}
	</div>
</body>
</html>

最佳答案

如果您使用的是 bootstrap V4.0.0-alpha.6，

替换

navbar navbar-expand-lg navbar-light bg-light

与

navbar navbar-toggleable-md navbar-light bg-faded

引用:https://v4-alpha.getbootstrap.com/components/navbar/

link您在问题中添加的是针对 bootstrap V4.0.0-beta.2 的，在您添加的代码头文件中针对的是 Bootstrap v4 alpha6

并且您忘记在代码中添加 JQuery。

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet"/>

<body>
	
        <nav class="navbar navbar-toggleable-md navbar-light bg-faded">
  <a class="navbar-brand" href="#">Navbar</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <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 dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          Dropdown
        </a>
        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <div class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
    <form class="form-inline my-2 my-lg-0">
      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
    </form>
  </div>
</nav>
</body>

关于javascript - Bootstrap 4 Navbar 示例卡在移动模式，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46901342/

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