导航栏切换按钮 - 不会下拉

Question

我有一个Django主页，它有一个Bootstrap导航栏，当调整大小时，我会显示一个切换按钮。我的问题是，当这个切换按钮生效时，我不能下拉导航栏项目？我不确定如何解决这个问题。

这些是什么样子的片段(为了一个想法)：https://i.stack.imgur.com/cREpj.jpg这是我的进口商品：

粘贴框：https://pastebin.com/QqPiyVxf

<!-- BOOTSTRAP CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<!-- SCRIPTS -->
<script src="https://kit.fontawesome.com/879dc93f9e.js" crossorigin="anonymous"></script>

<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<!--LOGO-->
<a class="navbar-brand" style="pointer-events: none">
<!-- Unclickable -->
<img src="http://www.w3.org/2000/svg" width="30" height="30" alt="">
</a>
<!--MAIN NAV-->
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse justify-content-md-center" id="navbarTogglerDemo02">
{% with request.resolver_match.url_name as url_name %}
<ul class="navbar-nav">
<li class="nav-item {% if url_name == 'home' %}active{% endif %}">
<a class="nav-link" href="{% url 'home' %}">Home</a>
</li>
<li class="nav-item {% if url_name == 'about' %}active{% endif %}">
<a class="nav-link" href="{% url 'about' %}">About</a>
</li>
<li class="nav-item {% if url_name == 'projects' %}active{% endif %}">
<a class="nav-link" href="{% url 'projects' %}">Projects</a>
</li>
<li class="nav-item {% if url_name == 'uses' %}active{% endif %}">
<a class="nav-link" href="{% url 'uses' %}">Uses</a>
</li>
<li class="nav-item {% if url_name == 'contact' %}active{% endif %}">
<a class="nav-link" href="{% url 'contact' %}">Contact</a>
</li>
</ul>
{% endwith %}
</div>
<!--SOCIALS-->
<!-- Twitter -->
<a class="btn btn-primary" href="#" target="_blank" role="button" style="margin-left: 10px; background-color: #55acee; border-color: #55acee;">
<i class="fab fa-twitter"></i>
</a>
<!-- LinkedIn -->
<a class="btn btn-primary" href="#" role="button" target="_blank" style="margin: 10px 10px 10px 10px; background-color: #0082ca;border-color: #0082ca">
<i class="fab fa-linkedin-in"></i>
</a>
<!-- Github -->
<a class="btn btn-primary" href="#" role="button" target="_blank" style="background-color: #333333; border-color: #333333;">
<i class="fab fa-github"></i>
</a>
</nav>

以下是我在正文底部的脚本：

<!-- SCRIPTS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>

Answer 1

使用Bootstrap 5.1版本更新了工作代码段

引导程序5.1

我在你的代码中做了以下更改

• 我使用了Bootstrap 5.1版本
• 我更改了按钮元素中的以下属性

data-toggle="collapse" 
data-target="#navbarTogglerDemo02" 

已更改为

data-bs-toggle="collapse"
data-bs-target="#navbarTogglerDemo02" 

请检查以下工作片段

<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<!--LOGO-->
<a class="navbar-brand" style="pointer-events: none">
<!-- Unclickable -->
<img src="http://www.w3.org/2000/svg" width="30" height="30" alt="">
</a>
<!--MAIN NAV-->

<button
class="navbar-toggler"
type="button"
data-bs-toggle="collapse"
data-bs-target="#navbarTogglerDemo02"
aria-controls="navbarTogglerDemo02"
aria-expanded="false"
aria-label="Toggle navigation"
>
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse justify-content-md-center" id="navbarTogglerDemo02">
{% with request.resolver_match.url_name as url_name %}
<ul class="navbar-nav">
<li class="nav-item {% if url_name == 'home' %}active{% endif %}">
<a class="nav-link" href="{% url 'home' %}">Home</a>
</li>
<li class="nav-item {% if url_name == 'about' %}active{% endif %}">
<a class="nav-link" href="{% url 'about' %}">About</a>
</li>
<li class="nav-item {% if url_name == 'projects' %}active{% endif %}">
<a class="nav-link" href="{% url 'projects' %}">Projects</a>
</li>
<li class="nav-item {% if url_name == 'uses' %}active{% endif %}">
<a class="nav-link" href="{% url 'uses' %}">Uses</a>
</li>
<li class="nav-item {% if url_name == 'contact' %}active{% endif %}">
<a class="nav-link" href="{% url 'contact' %}">Contact</a>
</li>
</ul>
{% endwith %}
</div>
<!--SOCIALS-->
<!-- Twitter -->
<a class="btn btn-primary" href="#" target="_blank" role="button" style="margin-left: 10px; background-color: #55acee; border-color: #55acee;">
<i class="fab fa-twitter"></i>
</a>
<!-- LinkedIn -->
<a class="btn btn-primary" href="#" role="button" target="_blank" style="margin: 10px 10px 10px 10px; background-color: #0082ca;border-color: #0082ca">
<i class="fab fa-linkedin-in"></i>
</a>
<!-- Github -->
<a class="btn btn-primary" href="#" role="button" target="_blank" style="background-color: #333333; border-color: #333333;">
<i class="fab fa-github"></i>
</a>
</nav>

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>

更新了Bootstrap 3.4.1版本的工作代码段

注意：可切换的上下文菜单用于显示链接列表。与下拉式JavaScript插件交互。Thant的意思是你必须通过javascript 调用下拉菜单

例如：

// Call the dropdowns via JavaScript___
$('.dropdown-toggle').dropdown();

请检查以下工作片段

$('.dropdown-toggle').dropdown();

<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<!--LOGO-->
<a class="navbar-brand" style="pointer-events: none">
<!-- Unclickable -->
<img src="http://www.w3.org/2000/svg" width="30" height="30" alt="">
</a>
<!--MAIN NAV-->

<button
type="button" 
class="dropdown-toggle" 
id="dropdownMenu1" 
data-toggle="dropdown" 
aria-haspopup="true" 
aria-expanded="true"
>
<span class="navbar-toggler-icon"></span>
</button>

<div class="collapse navbar-collapse justify-content-md-center dropdown-menu" id="navbar" aria-labelledby="dropdownMenu1">
{% with request.resolver_match.url_name as url_name %}
<ul class="navbar-nav">
<li class="nav-item {% if url_name == 'home' %}active{% endif %}">
<a class="nav-link" href="{% url 'home' %}">Home</a>
</li>
<li class="nav-item {% if url_name == 'about' %}active{% endif %}">
<a class="nav-link" href="{% url 'about' %}">About</a>
</li>
<li class="nav-item {% if url_name == 'projects' %}active{% endif %}">
<a class="nav-link" href="{% url 'projects' %}">Projects</a>
</li>
<li class="nav-item {% if url_name == 'uses' %}active{% endif %}">
<a class="nav-link" href="{% url 'uses' %}">Uses</a>
</li>
<li class="nav-item {% if url_name == 'contact' %}active{% endif %}">
<a class="nav-link" href="{% url 'contact' %}">Contact</a>
</li>
</ul>
{% endwith %}
</div>
<!--SOCIALS-->
<!-- Twitter -->
<a class="btn btn-primary" href="#" target="_blank" role="button" style="margin-left: 10px; background-color: #55acee; border-color: #55acee;">
<i class="fab fa-twitter"></i>
</a>
<!-- LinkedIn -->
<a class="btn btn-primary" href="#" role="button" target="_blank" style="margin: 10px 10px 10px 10px; background-color: #0082ca;border-color: #0082ca">
<i class="fab fa-linkedin-in"></i>
</a>
<!-- Github -->
<a class="btn btn-primary" href="#" role="button" target="_blank" style="background-color: #333333; border-color: #333333;">
<i class="fab fa-github"></i>
</a>
</nav>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha384-aJ21OjlMXNL5UyIl/XNwTMqvzeRMZH2w8c5cRVpzpU8Y5bApTppSuUkhZXN0VxHd" crossorigin="anonymous"></script>

参考链接(我的另一个堆栈溢出答案)：https://stackoverflow.com/a/69763221/3073842

Answer 2

在关闭body标记之前，将以下JS库包含到模板文件中，

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>