Question

如何在HTML代码中为按钮添加下拉列表。我使用以下代码生成一个按钮并附上一个下拉列表，但它不起作用。

生成菜单按钮，它甚至在单击时突出显示，但在单击时不显示下拉列表。

＆＃13;

.jumbotron {
  text-align: center;
  color: white;
  background-color: black;
  height: 120px;
  font-size: 50px;
}

body {
  background-color: #ededed;
}

＆＃13;

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<div class="row">
  <div class="col-lg-1">
    <div class="container">
      <div class="btn-group" role="group">
        <button type="button" class="btn btn-default btn-lg dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Menu <span class="glyphicon glyphicon-menu-hamburger"></span></button>
        <ul class="dropdown-menu">
          <li><a href="index.html">Home</a></li>
          <li><a href="about.html">About</a></li>
        </ul>
      </div>
    </div>
  </div>
  <div class="col-lg-10">
    <div class="container">
      <div class="jumbotron container"><strong>FEEDBACK</strong></div>
    </div>
  </div>
</div>

＆＃13;

Answer 1

您必须包含jQuery库和bootstrap.js。

为什么你在container课程中使用col课程......这不是一个好习惯。

阅读本文： Bootstrap Grid Structure

Stack Snippet

＆＃13;

.jumbotron {
  text-align: center;
  color: white;
  background-color: black;
  height: 120px;
  font-size: 50px;
}

body {
  background-color: #ededed;
}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<div class="container">
  <div class="btn-group" role="group">
    <button type="button" class="btn btn-default btn-lg dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Menu <span class="glyphicon glyphicon-menu-hamburger"></span></button>
    <ul class="dropdown-menu">
      <li><a href="index.html">Home</a></li>
      <li><a href="about.html">About</a></li>
    </ul>
  </div>
</div>

<div class="container">
  <div class="jumbotron container"><strong>FEEDBACK</strong></div>
</div>

＆＃13;

如何使用Bootstrap将下拉菜单添加到HTML / CSS中的按钮？

1 个答案: