Bootstrap下拉菜單樣式

2019-11-19 17:41:53

字體：大中小

來源：轉載

供稿：網友

本文實例為大家分享了Bootstrap下拉菜單的具體代碼，供大家參考，具體內容如下

<!doctype html><html><head>  <meta charset="utf-8">  <meta http-equiv="X-UA-Compatible" content="IE=edge">  <meta name="viewport" content="width=device-width, initial-scale=1">  <title>Bootstrap</title>  <link rel="stylesheet" href="css/bootstrap.css" /></head><!--第1步:添加一個dropdown父級;第2步:給button添加一個data-toggle="dropdown"屬性;第3步:給ul添加一個class="dropdown-menu”. 最好再給button添加一個dropdown-toggle的class屬性--><body>  <div class="container" style="margin-top:5px">    <div class="row">      <div class="dropdown">        <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">學院課程 <span class="caret"></span></button><!--btn-default默認顏色-->        <ul class="dropdown-menu">          <li><a href="#">html</a></li>          <li><a href="#">css</a></li>          <li><a href="#">javascript</a></li>          <li><a href="#">less</a></li>          <li><a href="#">bootstrap</a></li>        </ul>        </div>    </div>  </div>  <script src="js/jquery-2.1.0.js"></script>  <script src="js/bootstrap.js"></script></body></html>

效果圖：

Bootstrap下拉菜單的樣式：

<!doctype html><html><head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Bootstrap</title> <link rel="stylesheet" href="css/bootstrap.css" rel="external nofollow" /></head><body> <div class="container" style="margin-top:5px"> <div class="row">  <div class="col-lg-4">  <div class="dropdown"> <!--在dropdown后面加上open使下拉列表默認展開;而pull-right使其右浮動并右對齊，改為dropup使箭頭朝上并向上展開-->   <button class="btn btn-default dropdown-toggle btn-block" data-toggle="dropdown">學院課程 <span class="caret"></span></button><!--btn-block使按鈕撐滿整個父級-->   <ul class="dropdown-menu">   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >html</a></li>   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >css</a></li>   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >javascript</a></li>   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >less</a></li>   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >bootstrap</a></li>   </ul>   </div>  </div>  <div class="col-lg-4">  <div class="dropdown">   <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">學院課程 <span class="caret"></span></button>   <ul class="dropdown-menu">   <li class="dropdown-header"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >前端</a></li><!--dropdown-header是菜單里的標題，給li添加-->   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >html</a></li>   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >css</a></li>   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >javascript</a></li>   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >less</a></li>   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >bootstrap</a></li>   <li class="divider"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >html</a></li><!--divider是分隔線，給li添加-->   <li class="dropdown-header text-center"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >后端</a></li><!--text-center讓內容居中-->   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >php</a></li>   <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >java</a></li>   <li class="disabled"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >.net</a></li><!--disabled使菜單不可選-->   </ul>   </div>  </div> </div> </div> <script src="js/jquery-2.1.0.js"></script> <script src="js/bootstrap.js"></script></body></html>

效果圖：