mark
<!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 weekday=["星期天","星期一","星期二","星期三","星期四","星期五","星期六"];
document.write(date.getFullYear()+"月"+(date.getMonth()+1)+"月"+date.getDate()+"日"+weekday[date.getDay()]+"--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 sorceStr = "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 sorces = sorceStr.split(';');
var sum=0;
for(var i=0;i<sorces.length;i++){
sum+=parseInt(sorces[i].split(":")[1])
}
var ave=sum/(sorces.length);
document.write(Math.floor(ave));
//从数组中将成绩撮出来，然后求和取整，并输出。
</script>
</head>
<body>
</body>
</html>
