[英]Bootstrap dropdown menu stuck in expanded position, doesn't respond to button
我正在尝试制作一个简单的登录程序,以便在我的办公室的讲台上使用。 该程序负责的全部工作是允许客户输入他们的姓名,用户名,问题描述,然后单击“提交”。 然后将这些信息放入CSV。
一切正常,但是我包含的Bootstrap 4下拉菜单始终处于打开状态。 当页面加载时,它默认为展开状态,并且无论是否单击按钮,它都保持打开状态。
我的代码与Bootstraps站点上显示的示例代码几乎完全相同:
<div class="row">
<div class="col-sm">
<div class="dropdown">
<button class="btn btn-secondary btn btn-block dropdown-toggle" type="button" id="dropdownMenuButton"
data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Reason for your visit
</button>
<div class="col-sm">
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton" style="display: block">
<a class="dropdown-item" href="javascript:dropDownSelection('Scantron Dropoff')">Scantron dropoff</a>
<a class="dropdown-item" href="javascript:dropDownSelection('Scantron Pickup')">Scantron pickup</a>
<a class="dropdown-item" href="javascript:dropDownSelection('Wifi issues')">Wifi issues</a>
<a class="dropdown-item" href="javascript:dropDownSelection('DUO Enrollment issues')">DUO Enrollment issues</a>
<a class="dropdown-item" href="javascript:dropDownSelection('Password Issues')">Password issues</a>
</div>
</div>
</div>
</div>
</div>
这是我的进口货:
<script src="node_modules/jquery/dist/jquery.js"></script>
<link rel="stylesheet"
href="node_modules/bootstrap/dist/css/bootstrap.min.css">
<link rel="stylesheet" href="custom.css">
编辑:这个问题似乎只存在于Electron / Node.JS环境中。 在Chrome中运行我的html / css(通过启动index.html文件)可以按预期工作,并且在开发人员控制台中不会显示任何错误。
您还必须导入bootstraps.bundle.js
。 否则它将不会切换:
<script src="node_modules/bootstrap/dist/js/bootstrap.bundle.js"></script>
请注意,您在导入boottsraps js文件之前先导入jquery
您还必须从下拉菜单中删除style="display: block"
。 此display: block;
这就是菜单停留在扩展位置的原因。
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous"> <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://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.bundle.min.js" integrity="sha384-pjaaA8dDz/5BgdFUPX6M/9SUZv4d12SUPF0axWc+VRZkx5xU3daN+lYb49+Ax+Tl" crossorigin="anonymous"></script> <!-- imported jquery, bootstraps css and bootstraps bundle.js --> <div class="row"> <div class="col-sm"> <div class="dropdown"> <button class="btn btn-secondary btn btn-block dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Reason for your visit </button> <div class="col-sm"> <div class="dropdown-menu" aria-labelledby="dropdownMenuButton"> <!-- removed style="display: block;" --> <a class="dropdown-item" href="javascript:dropDownSelection('Scantron Dropoff')">Scantron dropoff</a> <a class="dropdown-item" href="javascript:dropDownSelection('Scantron Pickup')">Scantron pickup</a> <a class="dropdown-item" href="javascript:dropDownSelection('Wifi issues')">Wifi issues</a> <a class="dropdown-item" href="javascript:dropDownSelection('DUO Enrollment issues')">DUO Enrollment issues</a> <a class="dropdown-item" href="javascript:dropDownSelection('Password Issues')">Password issues</a> </div> </div> </div> </div> </div>
“我包含的Bootstrap 4下拉菜单始终处于打开状态”
下拉列表保持“打开”状态,因为它具有内联样式"style:display:block"
。 删除它并遵循正常的下拉菜单结构 ...
<div class="col-sm">
<div class="dropdown">
<button class="btn btn-secondary btn btn-block dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Reason for your visit
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<a class="dropdown-item" href="javascript:dropDownSelection('Scantron Dropoff')">Scantron dropoff</a>
<a class="dropdown-item" href="javascript:dropDownSelection('Scantron Pickup')">Scantron pickup</a>
<a class="dropdown-item" href="javascript:dropDownSelection('Wifi issues')">Wifi issues</a>
<a class="dropdown-item" href="javascript:dropDownSelection('DUO Enrollment issues')">DUO Enrollment issues</a>
<a class="dropdown-item" href="javascript:dropDownSelection('Password Issues')">Password issues</a>
</div>
</div>
</div>
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