下拉菜单在 Bootstrap 5 中不起作用

Question

下拉菜单在 Bootstrap 5 中不起作用。但是当我添加一些脚本代码时 works.For 示例：

<script>
    $(document).ready(function() {
        $('.dropdown-toggle').dropdown();
    });
</script>

当我添加此代码块时 works.But 我的问题是： Bootstrap 是否必须运行下拉菜单具有自己的 js 脚本而不添加额外的脚本代码？

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Focus Education</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
</head>

<body>
    <div class="dropdown">
        <button class="btn btn-primary dropdown-toggle" type="button" id="dropdownMenuButton" data-mdb-toggle="dropdown" aria-expanded="false">
      Dropdown button
    </button>
        <ul class="dropdown-menu" aria-labelledby="dropdownMenuButton">
            <li><a class="dropdown-item" href="#">Action</a></li>
            <li><a class="dropdown-item" href="#">Another action</a></li>
            <li><a class="dropdown-item" href="#">Something else here</a></li>
        </ul>
    </div>

</body>
<script src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
</html>

Answer 1

基本上你在 data-mdb-toggle="dropdown" 有一个 typo/mistake 它应该是 data-bs-toggle="dropdown" 请查看 docs 以获得关于组件和可用 api 的更多解释。

下面是工作片段

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Focus Education</title>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
</head>

<body>
  <div class="dropdown">
    <button class="btn btn-primary dropdown-toggle" type="button" id="dropdownMenuButton" data-bs-toggle="dropdown" aria-expanded="false">
      Dropdown button
    </button>
    <ul class="dropdown-menu" aria-labelledby="dropdownMenuButton">
      <li><a class="dropdown-item" href="#">Action</a></li>
      <li><a class="dropdown-item" href="#">Another action</a></li>
      <li><a class="dropdown-item" href="#">Something else here</a></li>
    </ul>
  </div>

</body>
<script src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>

</html>

下拉菜单在 Bootstrap 5 中不起作用

Dropdown Menu Does not Work in Bootstrap 5

html

css

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drop-down-menu