<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<style type="text/css">
*{margin:0px;padding:0px;}
body{font-size:12px;}
.box{margin:10px;padding:10px;}
.box h3{margin:10px 0px;border-bottom:1px solid red;padding-bottom:10px;}
.box p{line-height:20px;}
#allbox{margin:10px;padding:10px;}
#allbox div{border:5px solid #aaccff;margin-top:10px;height:30px;}
</style>
<script type="text/javascript" src="Scripts/jquery-1.4.1.js"></script>
<script type="text/javascript">
$(function(){
var a = "<div></div>"
$("#btn1").click(function(){
$("#allbox").append(a)
})
$("#btn2").click(function(){
$("#allbox").prepend(a)
})
$("#btn3").click(function(){
$("#box2").before(a)
})
$("#btn4").click(function(){
$("#box2").after(a)
})
})
</script>
</head>
<body>
<div class="box">
<h3>试题要求</h3>
<p>
<input type="button" value="在allbox内部的底部插入一个div" id="btn1" />
<input type="button" value="在allbox内部的顶部插入一个div" id="btn2"/>
<input type="button" value="在box2前面插入一个div" id="btn3"/>
<input type="button" value="在box2后面插入一个div"id="btn4" />
</p>
</div>
<div id="allbox">
<div id="box1">#box1</div>
<div id="box2">#box2</div>
<div id="box3">#box3</div>
</div>
</body>
</html>
