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<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 day = ["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
document.write(mydate.getFullYear() + "年" + mydate.getMonth() + "月" + mydate.getDate() +"日" + day[mydate.getDay()] + "--" + "班级总分为：" + av);
//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 split = sorceStr.split(":");
var sum = 0;
for (i=1; i<split.length; i++){
sum += parseInt(split[i]);
}
var av = parseInt(sum/(split.length-1));
//从数组中将成绩撮出来，然后求和取整，并输出。
</script>
</head>
<body>
</body>
</html>
