Question

我使用bootstrap为我的“home.html”使用下面给出的代码。但是，通过移动设备浏览网站时，搜索栏及其中的所有内容都无法显示。请帮帮忙！谢谢！

<!-- Navigation -->
<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
    <div class="container">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navigationbar">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="/">Get Started</a>
        </div>
        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav navbar-right">
    <li>
            <form class="navbar-form navbar-left" role="search" action="/search/" method="GET" id="search" autocomplete="off">
    <div class="form-group">
      <input type="text" class="form-control" placeholder="Select what to search for" name="query" width="100px">
      <select name="drop" class="form-control" width="20">
      <option value="1"> Assigns</option>
      <option value="2"> Subjects(Tutorials)</option>
      <option value="3"> Subjects(Papers)</option>
      </select>
    </div>
    <button type="submit" class="btn btn-default"><span class="glyphicon glyphicon-search"></span></button>
  </form>


    </li>
                <li>
                    <a href="#home">Home</a>
                </li>
                <li>
                    <a href="#about">About</a>
                </li>
                <li>
                    <a href="#contact">Contact us</a>
                </li>
            </ul>
        </div> 

        <!-- /.navbar-collapse -->
    </div>
    <!-- /.container -->
</nav>

Answer 1

折叠导航栏时显示的按钮的data-target指向不存在的元素ID（#navigationbar）。将它指向折叠元素（＃bs-example-navbar-collapse-1）。

...
<div class="navbar-header">
    <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
        <span class="sr-only">Toggle navigation</span>
...

实例：http://www.bootply.com/Xn2oJQYhih

Answer 2

您的切换目标与您的折叠ID不匹配：

<button type="button"... data-target="#navigationbar">

<div class="collapse navbar-collapse" id="navigationbar">

Fiddle

Answer 3

检查页面上的所有库是nav-collapse所需的基本库是bootstrap和jquery，您可以将下一个脚本添加到头代码中

http://getbootstrap.com/getting-started/

https://cdnjs.com/libraries/jquery/

对于另一个验证，数据切换具有与导航栏相关的正确ID

Bootstrap导航栏无法在移动设备上运行

3 个答案: