我下载了 bootstrap 5 和 jquery 3.6，问题是当我嵌入它们时，下拉按钮不起作用是我的代码中缺少什么吗？

Question

这是我的代码： 我下载了 bootstrap 5 和 jquery 3.6，问题是当我嵌入它们时，下拉按钮不起作用我的代码中是否缺少任何内容？

<head>
    <title>
        Restaurant
    </title>

    <link rel="stylesheet" href="./bootstrap-5.1.3-dist/css/bootstrap.min.css">


</head>

<body>
    <div class="dropdown">
        <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton1"
            data-bs-toggle="dropdown" aria-expanded="false">
            Dropdown button
        </button>
        <ul class="dropdown-menu" aria-labelledby="dropdownMenuButton1">
            <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>


    <script type="text/javascript" src="./bootstrap-5.1.3-dist/js/bootstrap.min.js"></script>
    <script type="text/javascript" src="./jquery-3.6.0.min.js"></script>
    
</body>"

Answer 1

您需要在 bootstrap 之前导入您的 jquery、popper。一个工作示例：

<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>

<!-- css --> 
<link href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css" rel="stylesheet"/>

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

我下载了 bootstrap 5 和 jquery 3.6，问题是当我嵌入它们时，下拉按钮不起作用是我的代码中缺少什么吗？

i downloaded bootstrap 5 and jquery 3.6,the issue is that when i embed them the dropdown button is not working is there anything missing in my code?

html

css

jquery

bootstrap-4