代码如下：
<!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 today = new Date();
document.write(today.getFullYear()+'年'+today.getMonth()+1+'月'+today.getDate()+'日 ');
var weekday = today.getDay();
switch(weekday)
{
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;
case 0: weekday = "星期日";
}
document.write(weekday+"<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 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 score = scoreStr.split(";");
// document.write(score);
//从数组中将成绩撮出来，然后求和取整，并输出。
for(var i=0,sum=0;i<score.length;++i)
{
sum+= parseInt(score[i].substr(score[i].indexOf(':')+1));
}
document.write(sum);
</script>
</head>
<body>
</body>
</html>
