Bootstrap 5导航栏切换按钮失效问题求助

你的问题核心是缺少Bootstrap JavaScript文件的引入。Bootstrap 5的折叠交互（包括导航栏切换按钮）必须依赖其JS插件才能正常工作，你当前的代码只引入了CSS样式，没有加载核心JS文件，导致点击切换按钮后没有任何动作。

修复步骤 #

在页面的</body>结束标签前，添加Bootstrap的JavaScript CDN链接：

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-C6RzsynM9kWDrMNeT87bh95OGNyZPhcTNXj1NW7RuBCsyN/o0jlpcV8Qyq46cDfL" crossorigin="anonymous"></script>

修改后的完整代码示例 #

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" 
  rel="stylesheet" integrity="sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN" 
  crossorigin="anonymous">
  <title>Disc Golfers Can't Read - Home</title>
  <style>section{ padding: 30px 0; }</style>
</head>
<body>
  <!-- navbar -->
  
  <nav class="navbar navbar-expand-md navbar-light">
    <div class="container-xxl">
      <a href="#intro" class="navbar-brand">
        <span class="fw-bold text-secondary">
          DGCR
        </span>
      </a>
      <!-- toggle button -->
      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" 
      data-bs-target="#main-nav" aria-controls="main-nav" aria-expanded="false" 
      aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
      
      <!-- navbar links -->
      <div class="collapse navbar-collapse justify-content-end align-center" 
      id="main-nav">
        <ul class="navbar-nav">
          <li class="nav-item">
            <a class="nav-link" href="background.html">Background</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="equipment.html">Equipment</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="rules.html">Rules</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="how_to_play.html">How to Play</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="links.html">Links</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="contact.html">Contact Us</a>
          </li>
        </ul>
      </div>
    </div>
  </nav>

  <!-- 引入Bootstrap JS文件 -->
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-C6RzsynM9kWDrMNeT87bh95OGNyZPhcTNXj1NW7RuBCsyN/o0jlpcV8Qyq46cDfL" crossorigin="anonymous"></script>
</body>
</html>

补充说明 #

• bootstrap.bundle.min.js已经包含了Popper.js，不需要额外引入Popper，这是Bootstrap 5的默认推荐方式。
• 确保JS文件放在页面内容的最后，这样能保证DOM加载完成后再执行JS，避免元素未找到的问题。

内容的提问来源于stack exchange，提问作者Kool_Aid