代码ok的
<!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">
var date=new Date();
var year=date.getFullYear();
var month=(date.getMonth()+1);
var day=date.getDate();
var weekday=date.getDay();
switch(weekday){
case 0: weekday="星期日";break;
case 1: weekday="星期一";break;
case 2: weekday="星期二";break;
case 3: weekday="星期三";break;
case 4: weekday="星期四";break;
case 5: weekday="星期五";break;
case 6: weekday="星期六";break;
default: break;
}
//通过javascript的日期对象来得到当前的日期，并输出。
document.write(year+"年"+month+"月"+day+"日"+" "+weekday+"--班级总分为:");
//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 scoreStr = "小明:87;小花:81;小红:97;小天:76;小张:74;小小:94;小西:90;小伍:76;小迪:64;小曼:76";
var scoreArray=scoreStr.split(';');
var scoreSum=0;
//从数组中将成绩撮出来，然后求和取整，并输出。
for(var i=0;i<10;i++){
scoreSum=scoreSum+parseInt(scoreArray[i].slice(3));
}
document.write(Math.floor(scoreSum/10));
</script>
</head>
<body>
</body>
</html>
