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(){ $("body").delegate("p","click",function(){ $(this).slideToggle(); }); $("button").click(function(){ $("body").undelegate(); }); }); </script> </head> <body> <p>落。</p> <p>段落。</p> <p>本段落。</p> <button>删除由 delegate() </button> </body> </html>
查看结果: