<!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();
timeStr='';
var year = date.getFullYear()+"年";
var month = date.getMonth() + 1 + "月";
var day = date.getDate() + "日";
var dayNum = date.getDay();
var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
var week = weekday[dayNum];
timeStr = year+month+day+week;
document.write(timeStr+"<br>");
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 arr = sorceStr.split(";");
var sum = 0;
var aver = 0;
for(var i = 0;i < arr.length;i++){
var index = arr[i].indexOf(":");
sum += parseInt (arr[i].substr(index+1,2));
}
aver = sum/arr.length;
document.write(aver);
//从数组中将成绩撮出来，然后求和取整，并输出。
</script>
</head>
<body>
</body>
</html>
