比如可能实现如下API
$("#b").appendTo($("#a"),'top');
<div id="a">
<div id="不定"></div>
.
.
.
<div id="不定n"></div>
</div>
<div id="b"></div>通过执行jq,html结构变为:<div id="a">
<div id="b"></div>
<div id="不定"></div>
.
.
.
<div id="不定n"></div>
</div>
$("#b").appendTo($("#a"),'top');
<div id="a">
<div id="不定"></div>
.
.
.
<div id="不定n"></div>
</div>
<div id="b"></div>通过执行jq,html结构变为:<div id="a">
<div id="b"></div>
<div id="不定"></div>
.
.
.
<div id="不定n"></div>
</div>
prependTo 把所有匹配的元素前置到另一个、指定的元素元素集合中。
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>测试层滚动</title>
<script src="jquery-1.3.2.js"></script>
<script>
$(document).ready(function(){
$("#btn").click(function(){
$("#test_p").prepend("<b>hello</b>");//结果为 <p><b>Hello</b>I would like to say: </p>
$("#test").prependTo("#foo");//结果为<div id="foo"><p>I would like to say: </p></div>
});
});
</script>
</head><body>
<p id="test_p">I would like to say: </p>
<input type="button" id="btn" /><br />
<p id="test">I would like to say: </p><div id="foo"></div>
</body>
</html>
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>测试层滚动</title>
<script src="jquery-1.3.2.js"></script>
<script>
$(document).ready(function(){
$("#btn").click(function(){
$("#test_p").prepend("<b>hello</b>");//结果为 <p><b>Hello</b>I would like to say: </p>
$("#test").prependTo("#foo");//结果为<div id="foo"><p>I would like to say: </p></div>
});
});
</script>
</head><body>
<p id="test_p">I would like to say: </p>
<input type="button" id="btn" /><br />
<p id="test">I would like to say: </p><div id="foo"></div>
</body>
</html>