单击导航栏按钮时,菜单未显示

时间:2017-12-27 00:06:59

标签: twitter-bootstrap

相对于使用bootstrap的导航栏,我在下面有这个html。问题是,当单击打开导航栏的按钮时,导航栏不会出现。正在导入jquery和bootstrap jquery文件。

你知道问题出在哪里吗?

工作示例(http://jsfiddle.net/7fhs23bt/

HTML:

<div class="container px-0">
  <nav class="navbar navbar-expand-md navbar-light bg-faded">

    <a class="navbar-brand" href="#">Logo</a>
    <button class="navbar-toggler navbar-toggler-right" 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 ml-auto d-flex align-items-center">
        <li class="nav-item">
          <a class="nav-link" href="#">Item 1<span class="sr-only">(current)</span></a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Item 2</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Item 3</a>
        </li>
      </ul>
    </div>
  </nav>
</div>

1 个答案:

答案 0 :(得分:0)

运行代码时 - 使用Chrome浏览器 - 它表示“popper”未定义。

快速谷歌说你需要包含popper库 - 但是如果你使用Bootstrap的Bundle,这已经包含了。

https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.bundle.min.js

替换当前对Bootstrap的CDN引用

这将解决您的问题 - 这是一个有用的代码段:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.bundle.min.js"></script>
<div class="container px-0">
  <nav class="navbar navbar-expand-md navbar-light bg-faded">

    <a class="navbar-brand" href="#">Logo</a>
    <button class="navbar-toggler navbar-toggler-right" 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 ml-auto d-flex align-items-center">
        <li class="nav-item">
          <a class="nav-link" href="#">Item 1<span class="sr-only">(current)</span></a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Item 2</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Item 3</a>
        </li>
      </ul>
    </div>
  </nav>
</div>

如果您需要澄清我如何解决此问题,请告诉我