Question

我基本上从http://getbootstrap.com/components/复制了Pills下拉菜单的组件，但它根本不起作用。单击菜单项时，下拉列表不会出现。我将我的确切代码复制到JSFiddle中：https://jsfiddle.net/j63f0o2f/。来自JSFiddle的片段：

<div class="nav">
    <ul class="nav nav-pills nav-justified">
        <li><a href="#">Robot Technology</a></li>
        <li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Webdesign <span class="caret"></span></a>
            <ul class="dropdown-menu" role="menu">
                <li><a href="#">HTML 5</a></li>
                <li><a href="#">CSS 3</a></li>
                <li><a href="#">Bootstrap 5</a></li>
            </ul>
        </li>

Answer 1

你可能没有在<script src=""></script>

的身体底部包含bootstrap.js和jquery.js

https://jsfiddle.net/j63f0o2f/1/

Answer 2

您必须在<head>标记内插入Bootstrap JavaScript文件和JQuery JavaScritp文件。仔细查看以下代码段：

＆＃13;

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Bootstrap 101 Template</title>

    <!-- Bootstrap -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">

    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
      <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
        <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
    <!-- Include all compiled plugins (below), or include individual files as needed -->
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
  </head>
  <body>
    <h1>Hello, world!</h1>
    <div class="nav">
    <ul class="nav nav-pills nav-justified">
        <li><a href="#">Robot Technology</a></li>
        <li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Webdesign <span class="caret"></span></a>
            <ul class="dropdown-menu" role="menu">
                <li><a href="#">HTML 5</a></li>
                <li><a href="#">CSS 3</a></li>
                <li><a href="#">Bootstrap 5</a></li>
            </ul>
        </li>
      </ul>
  </div>

  </body>
</html>

＆＃13;

为什么我的Bootstrap Pills下拉列表不起作用？

2 个答案: