看过来看过来
<!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 mynum = mydate.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 year = mydate.getFullYear();
var month = mydate.getMonth() + 1;
var day = mydate.getDate();
document.write("今天是:"+ year + "年" + month + "月" + day + "日" + weekday[mynum] + "<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 arr = scoreStr.split(";");
var sum = 0 ;
var aver = 0;
//从数组中将成绩撮出来,然后求和取整,并输出。
function add(){
for( var i=0;i<arr.length;i++)
{
sum = sum + parseInt(arr[i].substr(3,2));
aver = sum / i;
}
return aver;
}
document.write("班级的平均分是:" + Math.round(add()));
</script>
</head>
<body>
</body>
</html>