return '<div class="' + $(this).text() + '" />';?
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<title></title>
<script src="https://www.imooc.com/static/lib/jquery/1.9.1/jquery.js"></script>
<style>
.left div,
.right div {
width: 100px;
padding: 5px;
margin: 5px;
float: left;
border: 1px solid #ccc;
background: #bbffaa;
}
.right div {
background: yellow;
}
p {
border: 1px solid red;
}
a {
border: 1px solid blue;
}
</style>
</head>
<body>
<h2>DOM包裹wrap()方法</h2>
<div class="left">
<button class="aaron1">点击,通过wrap方法给p元素增加父容器div</button>
<button class="aaron2">点击,通过wrap的回调方法给a元素增加父容器div</div>
</div>
<div class="right">
<p>p元素</p>
<p>p元素</p>
</div>
<div class="left">
<a>a元素</a>
<a>a元素</a>
</div>
<script type="text/javascript">
$(".aaron1").on('click', function() {
//给所有p元素，增加父容器div
$('p').wrap('<div></div>')
})
</script>
<script type="text/javascript">
$(".aaron2").on('click', function() {
$('a').wrap(function() {
return '<div class="' + $(this).text() + '" />';????
})
})
</script>
</body>
</html>
