51help TIY
码：
<html> <head> <script type="text/javascript" src="../jquery/jquery.js" tppabs="http://www.51help.tk/jquery/jquery.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("button").click(function(){ $("p").replaceWith(function(){ return "<p>Hello World!</p>"; }); }); }); </script> </head> <body> <p>落。</p> <p>段落。</p> <button class="btn1">用新的 p 有段落</button> </body> </html>
查看结果: