效果如下：
代码如下：
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style>
.dd-demo{
width:60px;
height:60px;
border:2px solid #d3d3d3;
position:absolute;
}
.proxy{
border:1px dotted #333;
width:60px;
height:60px;
text-align:center;
background:#fafafa;
}
#dd1{
background:#E0ECFF;
left:20px;
top:20px;
}
#dd2{
background:#8DB2E3;
left:100px;
top:20px;
}
#dd3{
background:#FBEC88;
left:180px;
top:20px;
}
</style>
</head>
<body>
<div id="dd1" class="dd-demo"></div>
<div id="dd2" class="dd-demo"></div>
<div id="dd3" class="dd-demo"></div>
</body>
</html>
<script src="http://code.jquery.com/jquery-1.4.4.min.js"></script>
<script src="http://www.w3cschool.cc/try/jeasyui/jquery.easyui.min.js"></script>
<script>
$(function(){
$('#dd1').draggable();
$('#dd2').draggable({
proxy:'clone'
});
$('#dd3').draggable({
proxy:function(source){
var p = $('<div class="proxy">proxy</div>');
p.appendTo('body');
return p;
}
});
});
</script>