这段代码为什么就是不输出呢 有大神吗？
<!DOCTYPE HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>系好安全带,准备启航</title>
<script type="text/javascript">
//通过javascript的日期对象来得到当前的日期，并输出。
var mydate=new Date();
var weekday=["星期日","星期一","星期二","星期三","星期四","星期五"，"星期六"]
document.write(
mydate.getFullYear()+"年"+
(mydate.getMonth()+1)+"月"+
mydate.getDate()+"日"+""+
weekday[mydate.getDay()]
);
</script>
</head>
<body>
</body>
</html>
