51help TIY
码：
<!DOCTYPE html> <html> <head> <script src="../../ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" tppabs="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("button").click(function(){ $("p").toggle(); }); }); </script> </head> <body> <button type="button">切换</button> <p>落。</p> <p>段落。</p> </body> </html>
查看结果: