BootStrap--CSS组件--下拉菜单(dropdown)

洪捷

2023-12-01

dropdown、dropdown-menu、dropdown-header、divider、dropdown-submenu
例子见下拉菜单.html

//源码
.dropup,
.dropdown {
  position: relative;
}
.dropdown-toggle:focus {
  outline: 0;
}
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1000;
  display: none;
  float: left;
  min-width: 160px;
  padding: 5px 0;
  margin: 2px 0 0;
  font-size: 14px;
  text-align: left;
  list-style: none;
  background-color: #fff;
  -webkit-background-clip: padding-box;
          background-clip: padding-box;
  border: 1px solid #ccc;
  border: 1px solid rgba(0, 0, 0, .15);
  border-radius: 4px;
  -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, .175);
          box-shadow: 0 6px 12px rgba(0, 0, 0, .175);
}
.dropdown-menu.pull-right {
  right: 0;
  left: auto;
}
.dropdown-menu .divider {
  height: 1px;
  margin: 9px 0;
  overflow: hidden;
  background-color: #e5e5e5;
}
.dropdown-header {
  display: block;
  padding: 3px 20px;
  font-size: 12px;
  line-height: 1.42857143;
  color: #777;
  white-space: nowrap;
}

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <!-- Bootstrap从3.0版本开始全面支持移动平台，贯彻移动先行宗旨 -->
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <title>Bootstrap 101 Template</title>

    <!-- Bootstrap -->
    <link href="bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet">

  </head>
  <body>
    <!--  -->
    <div class="btn-group">
        <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
            我的书籍<span class="caret"></span>
        </button>
        <ul class="dropdown-menu">
            <li><a href="#">编程</a></li>
            <li><a href="#">设计</a></li>
            <li><a href="#">深入</a></li>
        </ul>
    </div>

    <!-- dropdown/dropdown-menu/dropdown-header -->
    <div class="dropdown">
        <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
            我的书籍<span class="caret"></span>
        </button>
        <ul class="dropdown-menu">
            <li class="dropdown-header">前端</a></li>
            <li><a href="#">JS</a></li>
            <li><a href="#">HTML</a></li>
            <li><a href="#">CSS</a></li>
            <li class="divider"></li>
            <li class="dropdown-header">后台</li>
            <li><a href="#">PYTHON</a></li>
            <li><a href="#">JAVA</a></li>
        </ul>
    </div>


    <!-- bootstrap是基于jQuery-->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
    <script src="bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
  </body>
</html>

BootStrap--CSS组件--下拉菜单(dropdown)

相关阅读

相关文章

相关问答

相关文档