使用Bootstrap的Toggler组件时点击无响应无法折叠内容问题求助

故障原因 #

你混用了Bootstrap 4与Bootstrap 5的语法规则，导致折叠触发器失效，具体错误点：

• Bootstrap 4的折叠触发属性为data-toggle、data-target，你使用了仅Bootstrap 5支持的data-bs-toggle、data-bs-target属性，Bootstrap 4的JS脚本无法识别该属性，自然无法触发折叠逻辑
• 导航栏菜单的外边距类你使用了Bootstrap 5的me-auto，Bootstrap 4中对应的类为mr-auto，该问题不影响折叠功能，但会导致布局样式不符合预期

修正后可正常运行的代码 #

<head>
  <!-- Required meta tags -->
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

  <!-- Bootstrap CSS -->
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

  <title>Tindog</title>
</head>

<body>

  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
    <div class="container-fluid">
      <a class="navbar-brand" href="#">Tindog</a>
      <!-- 修改了data-bs-*属性为Bootstrap4兼容的data-*属性 -->
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
        <!-- 修改了me-auto为Bootstrap4兼容的mr-auto -->
        <ul class="navbar-nav mr-auto mb-2 mb-lg-0">
          <li class="nav-item">
            <a class="nav-link" href="#">Contact</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Pricing</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Download</a>
          </li>
        </ul>
      </div>
    </div>
  </nav>


  <!-- Optional JavaScript -->
  <!-- jQuery first, then Popper.js, then Bootstrap JS -->
  <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>
</body>

内容的提问来源于stack exchange，提问作者Xtreme