JS退出操作

<div class="exit" onclick="exit();">退出</a>

.exit{
color:#32a5e8;
font-size:24px;
float:right;
line-height:65px;
width:25px;
margin-right:25%;
white-space:nowrap;
cursor:pointer;
}

function exit(){
var msg = "您真的确定要退出吗？\n\n请确认！"; 
location=confirm(msg)?"login.php?act=exit":"#";
}

class storage{
public function logout(){
$_SESSION = array(); //清除SESSION值.
if(isset($_COOKIE[session_name()])){  //判断客户端的cookie文件是否存在,存在的话将其设置为过期.
setcookie(session_name(),'',time()-1,'/');
}
session_destroy();  //清除服务器的sesion文件
foreach($_COOKIE as $key=>$value){
setCookie($key,"",time()-3600);//清除服务器的cookies文件
}
}


public function deletecookiename($cookiename){
setcookie($cookiename, "", time() - 3600);
}
}