bootstrap 4 手风琴无法正常工作它仅适用于第一个元素

Question

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/js/bootstrap.min.js"></script>
<div id="accordion">
  <div class="card">
    <div class="card-header">
      <a class="card-link" data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
                    Collapsible Group Item #1
                </a>
    </div>
    <div id="collapseOne" class="collapse show">
      <div class="card-body">
        Lorem ipsum..
      </div>
    </div>
  </div>
  <div class="card">
    <div class="card-header">
      <a class="collapsed card-link" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
                    Collapsible Group Item #2
                </a>
    </div>
    <div id="collapseTwo" class="collapse">
      <div class="card-body">
        Lorem ipsum..
      </div>
    </div>
  </div>
  <div class="card">
    <div class="card-header">
      <a class="collapsed card-link" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
                    Collapsible Group Item #3
                </a>
    </div>
    <div id="collapseThree" class="collapse">
      <div class="card-body">
        Lorem ipsum..
      </div>
    </div>
  </div>
</div>

此手风琴代码在我的 html 项目中不起作用。试了很多次都没成功

还尝试了上面的 w3school 代码段。第一个工作得很好，但每当我试图折叠第二个时，它就不起作用。它会在几毫秒后崩溃，然后会自动显示 none 属性.

我也试过通过jquery主动崩溃，但结果是一样的。

Answer 1

这是为你工作fiddle

我认为您只是忘记在 bootstrap 脚本之前包含 jQuery 。

只需检查您的导入，应该看起来像这样：

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous"> <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script> <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>

和 jQuery 最重要的是导入

Answer 2

您的代码有效。

但是，请检查您是否包含了 bootstrap 4 和 jQuery 所需的所有必要文件（如果需要）。

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-beta.2/css/bootstrap.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-beta/js/bootstrap.min.js"></script>




<div id="accordion">
    <div class="card">
        <div class="card-header">
            <a class="card-link" data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
                Collapsible Group Item #1 Works
            </a>
        </div> 
        <div id="collapseOne" class="collapse show">
            <div class="card-body">
                Lorem ipsum..
            </div>
        </div>
    </div>
    <div class="card">
        <div class="card-header">
            <a class="collapsed card-link" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
                Collapsible Group Item #2
            </a>
        </div>
        <div id="collapseTwo" class="collapse">
            <div class="card-body">
                Lorem ipsum..
            </div>
        </div>
    </div>
    <div class="card">
        <div class="card-header">
            <a class="collapsed card-link" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
                Collapsible Group Item #3
            </a>
        </div>
        <div id="collapseThree" class="collapse">
            <div class="card-body">
                Lorem ipsum..
            </div>
        </div>
    </div>
</div>

结帐：demo

bootstrap 4 手风琴无法正常工作它仅适用于第一个元素

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