求解:为什么我这样写总和为76?
<script type="text/javascript">
//通过javascript的日期对象来得到当前的日期,并输出。
var Tdate = new Date();
var Year = Tdate.getFullYear();
var Month = Tdate.getMonth();
var TDate = Tdate.getDate();
var Day = Tdate.getDay();
var TDay = ["星期天","星期一","星期二","星期三","星期四","星期五","星期六"];
//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 =
[
["小明",87],["小花",81],["小红",97],
["小天",76],["小张",74],["小小",94],
["小西",90],["小五",76],["小迪",64],
["小曼",76]
];
//var scoreArr = scoreStr.split(";");
//从数组中将成绩撮出来,然后求和取整,并输出。
for(var i=0;i<score.length;i++){
var sum = 0;
sum = sum + score[i][1];
}
document.write(Year+"年"+Month+"月"+TDate+"日 "+TDay[Day]+"<br />");
document.write("班级总分为:"+sum+"<br />");
document.write("班级平均分为:"+Math.round(sum/10)+"<br />");
</script>