在引导程序中，如何使图像成为下拉菜单？
您好，我在引导程序中创建了一个下拉列表，我想放置一个图像，使其成为单击的项目以查看下拉列表。
下面是我的代码。
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Getting Started with Bootstrap</title>
<link href="css/bootstrap.min.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">
</head>
<body>
<nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-limanAbba-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">LimanAbba</a>
</div>
<div class="collapse navbar-collapse" id="bs-limanAbba-navbar-collapse-1">
<div class="navbar-header navbar-right">
<ul class="nav navbar-nav">
<li><a href="#">Freelance</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Contact</a></li>\
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
<span class="caret"></span><ul class="dropdown-menu">
<li><a href="#">Liman</a></li>
<li><a href="#">Code90</a></li>
<li><a href="#">Coding</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Separated link</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
</ul>
</div>
</div>
</nav>
<script src="js/jquery.js"></script>
<script src="js/bootstrap.min.js"></script>
</body>
</html>
只需将图像链接放在下拉按钮上即可。见下面的代码
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<body>
<div class="container">
<h2>Dropdowns</h2>
<p>The .dropdown with image link.</p>
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" id="menu1" data-toggle="dropdown">
<img src="https://i.stack.imgur.com/KKhkr.png?s=128&g=1">
<span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu" aria-labelledby="menu1">
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Menu item 1</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Menu item 2</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Menu item 3</a></li>
<li role="presentation" class="divider"></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Menu item 4</a></li>
</ul>
</div>
</div>
</body>
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