<!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 week=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
var thisweek=week[mydate.getDay()];
document.write(mydate.getFullYear()+"年"+mydate.getMonth()+"月"+mydate.getDate()+"日"+thisweek+"<br/>");
//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 arr=sorceStr.split(";");
document.write(arr+'<hr>');
var i;
var sum=0;
for(i=0;i<arr.length;i++){
var arr2=arr[i].split(':');
var score=parseInt(arr2[1]);
sum=sum+score;
document.write(score);
}
//从数组中将成绩撮出来，然后求和取整，并输出。
var average=sum/arr.length;
document.write("总成绩："+sum+"分"+"<br/>");
document.write("平均成绩："+Math.floor(average)+"分");
</script>
</head>
<body>
</body>
</html>
