Bootstrap 导航栏卡在移动显示中答案

【问题标题】：Bootstrap navbar stuck in mobile displayBootstrap 导航栏卡在移动显示中
【发布时间】：2018-12-07 00:19:41
【问题描述】：

我的导航栏卡在其移动显示中，我不确定是什么原因造成的？ http://jsfiddle.net/enL35t1q/

导航栏

<div class="collapse navbar-collapse" id="navbarSupportedContent">
    <ul class="navbar-nav mr-auto">
        <li class="nav-item active">
        <a class="nav-link" href="#">Login <span class="sr-only">(current)</span></a>
        </li>
        <li class="nav-item">
            <a class="nav-link" href="#">Register</a>
        </li>
    </ul>
     <!--Search Bar-->
        <form class="form-inline" method = "GET" action = "{% url 'search' %}" >
            <input class="form-control mr-sm-2" name="query"  type="text" placeholder="Zip Code or City/Town">
            <button class="btn btn-outline-success text-white my-2 my-sm-0" type="submit">Search</button>
        </form>
</nav>

【问题讨论】：

您是否按照 Bootstrap 文档来实现导航栏？
这实际上来自引导网站，除了我更改了链接

标签： html twitter-bootstrap bootstrap-4 navbar nav

【解决方案1】：

您使用了错误版本的引导程序。您正在使用带有 alpha 版本样式表链接的引导稳定版本代码。

更新的小提琴 http://jsfiddle.net/enL35t1q/12/

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" integrity="sha384-WskhaSGFgHYWDcbwN70/dfYBj47jz9qbsMId/iRN3ewGhXQFZCSftd1LZCfmhktB" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js" integrity="sha384-smHYKdLADwkXOn1EmN1qk/HfnUcbVRZyYmZ4qpPea6sjB/pTJ0euyQp0Mk8ck+5T" crossorigin="anonymous"></script>



<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="#">Login <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Register</a>
</li>
</ul>
<!--Search Bar-->
<form class="form-inline" method = "GET" action = "{% url 'search' %}" >
<input class="form-control mr-sm-2" name="query"  type="text" placeholder="Zip Code or City/Town">
<button class="btn btn-outline-success text-white my-2 my-sm-0" type="submit">Find Jobs</button>
</form>
</nav>

【讨论】：