<!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>
<script type="text/javascript">
$(function() {
$("#replace").click(function() {
$("br").replaceWith("<hr/>"); //将所有br替换为hr
$("p").wrap("<font color=‘red‘></font>"); //用红色样式将p标签给包起来
//<font color=‘red‘> <p> 用特定的样式包起来</p></font>
});
})
</script>
</head>
<body>
sdfsdfsdfrgrefg<br />
sdfsdfsdfrgrefg<br />
sdfsdfsdfrgrefg<br />
sdfsdfsdfrgrefg<br />
sdfsdfsdfrgrefg<br />
sdfsdfsdfrgrefg<br />
<p>
用特定的样式包起来</p>
<p>
用特定的样式包起来</p>
<p>
用特定的样式包起来</p>
<p>
用特定的样式包起来</p>
<input type="button"
value="ReplaceWith" id="replace"
/>
</body>
</html>
原文：http://www.cnblogs.com/sumg/p/3742747.html