我正在使用 Bootstrap 5 设计响应式页面，但我首先遇到了导航栏问题。切换按钮根本不起作用，单击时不显示任何项目。
我搜索过官方文档寻求解决方案，但没有帮助。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=, initial-scale=1.0">
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">
<title>Document</title>
</head>
<body>
<div class="container bg-dark">
<nav class="navbar navbar-expand-sm">
<a href="#" class="navbar-brand">Brand</a>
<button
class="navbar-toggler"
type = "button"
data-bs-toggle="collapse"
data-bs-target="#menuItems"
aria-controls="menuItems"
aria-expanded="false"
aria-label="Toggle Navigation"
>
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse">
<ul class="nav navbar-nav navbar-right">
<li class="nav-item">
<a href="#" class="nav-link">About</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">Pricing</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">Contact</a>
</li>
</ul>
</div>
</nav>
</div>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
</body>
</html>
您错过了使用 id
menuItemsnavbar-darkbg-dark<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=, initial-scale=1.0">
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">
<title>Document</title>
</head>
<body>
<div class="container bg-dark">
<nav class="navbar navbar-dark navbar-expand-sm">
<a href="#" class="navbar-brand">Brand</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#menuItems" aria-controls="menuItems" aria-expanded="false" aria-label="Toggle Navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="menuItems">
<ul class="navbar-nav">
<li class="nav-item">
<a href="#" class="nav-link">About</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">Pricing</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">Contact</a>
</li>
</ul>
</div>
</nav>
</div>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
</body>
</html>它可能不适合您，因为您的 index.html 中可能没有相关的 javascript 和 css 包。它需要 Javascript 包，因为 Toogle 可以使用 javascript 插件功能。
请尝试在您的代码中添加以下内容。