<script type="text/javascript">
var mydate=new Date();
var year=mydate.getFullYear();
var month=mydate.getMonth();
var day=mydate.getDate();
var weekday=["日","一","二","三","四","五","六"];
var num=mydate.getDay();
var week=weekday[num];
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 sourceArr = sorceStr.split(";");
var sum=0;
for(i=0;i<=sourceArr.length;i++){
sum=sum+parseInt(sourceArr[i].slice(3,5));
}
function a(){
document.write("今天时间是 ："+year+"年"+month+"月"+day+"日"+"今天是周"+week+"该班级总分是："+sum+"该班级平均分是："+parseInt(sum/sourceArr.length));
//从数组中将成}绩撮出来，然后求和取整，并输出。
}
</script>
<input type="button" value="点击我" onclick="a()" />
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