<!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>  
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  
<title>jquery文字淡入淡出--www.yuju100.com</title>  
<script type="text/
javascript" language="javascript" src="./jquery-1.7.1.min.js">  
</script>  
<script language="javascript">  
$(document).ready(function(){  
    $("#btn1").toggle(function(){  
            $("p").fadeOut("slow");  
            },function(){  
                $("p").fadeIn("slow");  
        });  
        $("#btn2").toggle(function(){  
              
            $("p").fadeTo("slow",0.66);  
            },function(){  
                $("p").fadeTo("slow",0.66);   
        });   
    });  
</script>  
</head>  
<body>
jquery实现文字淡入淡出效果,由(www.jb200.com)整理。
<p style="background:#3F3">this is pi<br>  
this is pi<br>  
this is pi<br>  
this is pi<br>  
this is pi<br>  
this is pi<br>  
</p>  
<input type="button" value="淡入/淡出" id="btn1">  
</body>  
<input type="button" value="淡入/淡出 效果 透明度0.66" id="btn2">  
</html>