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​x
 
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Bootstrap 实例 - 静态控件</title>
    <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">  
    <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
    <script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <style>
        ul {
            border: 1px solid black;
            width: 100px;
            height: 100px;
            margin-right: 30px;
            float: left;
            list-style: none;
        }
        ul li {
            cursor: pointer;    
        }
    </style>
</head>
<body>
​
<ul id="u1">
    <li>abc</li>
</ul>
<ul id="u2">
    <li>def</li>
</ul>
<script>
    $(function(){
        $('#u1').on('click', 'li', function(){
            $('#u2').append($(this));
        })
        $('#u2').on('click', 'li', function(){
            $('#u1').append($(this));
        })
    })
</script>
</body>
</html>
HTML