运行完 星期后面有undefined 为什么啊 不知道怎么搞
<!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。
function date(){
//获取年份
var date=new Date();
var myyear=date.getFullYear();
//获取月份
var mymonth=date.getMonth();
mymonth++;
//获取日期
var myday=date.getDate();
//获取星期
var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
var myweek=date.getDay();
document.write(myyear+"年"+mymonth+"月"+myday+"日"+" "+weekday[myweek]);
}
//成绩是一长窜的字符串不好处理，找规律后分割放到数组里更好操作哦
var score=new Array();
score=[['小明',87],['小花',81],['小小',97],['小洁',76],['小栋',74],['小敏',94],['小蓝',90],['小二',74],['小啦',64],['小飞',76],['小美',53]];
//获取每个学生的成就
var sum=0;
var p=0;
for(var i=0;i<score.length;i++)
{
document.write(DATE());
document.write(score[i][0]+" "+score[i][1]+"分"+"<br>");
//求和
sum=sum+score[i][1];
}
document.write("<br>");
//平均值
p=sum/score.length;
document.write(DATE()+"班级总分："+sum+"<br>"+"<br>");
document.write(DATE()+"班级平均分："+p+"<br>"+"<br>");
</script>
</head>
<body>
</body>
</html>
