<!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 myArr=["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()+1 + "月" + myDate.getDate() + "日" + myArr[myDate.getDay()]);
//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 scoreArr = sorceStr.split(";");
//从数组中将成绩撮出来,然后求和取整,并输出。
var sum = 0;
for (var i = 0; i < scoreArr.length; i++) {
sum = sum + parseInt(scoreArr[i].slice(3));
}
document.write("该班级总分是:"+sum+"改班级平均分是:"+parseInt(sum/scoreArr.length));
</script>
</head>