<html> //最简单的鼠标悬停,实现下拉功能,应用bootstrap框架的知识,不会bootstrap自己百度怎么使用
<head>
<meta charset="UTF-8">
<!-- 引入 Bootstrap -->
<link href="../css/bootstrap.min.css" rel="stylesheet">
<!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
<script src="../libs/jquery-1.11.1.js"></script>
<script src="../js/bootstrap.min.js"></script>
<title></title>
</head>
<body>
<div class="dropdown" >
<span class="dropdown-toggle" data-toggle="dropdown" data-target="#" >触发器</span>
<ul class="dropdown-menu" >
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
</div>
<script>
$(document).ready(function(){
$("span").hover(function(){//鼠标悬停触发事件
$(".dropdown-toggle").dropdown('toggle');
});
});
</script>
</body>
</html>