<!DOCTYPE html>
<html>
<head>
<script src="/js/jquery.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("p").unwrap();
});
</script>
<style type="text/css">
div{background-color:yellow;}
article{background-color:pink;}
</style>
</head>
<body>
<div>
<p>这是 div 元素中的段落。</p>
</div>
<article>
<p>这是 article 元素中的段落。</p>