TypeError: myarr[i] is undefined [报错]
aliezhou
2016-09-30 00:02
报错。
<!DOCTYPE HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk" />
<title>系好安全带,准备启航</title>
<script type="text/javascript">
var mydate=new Date();
var year=mydate.getFullYear();
var month=mydate.getMonth()+1;
var day=mydate.getDate();
var week=["星期日",'星期一','星期二','星期三','星期四','星期五','星期六'];
var myweek=week[mydate.getDay()];
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 myarr = sorceStr.split(";");
var myAr=new Array();
var sum = 0;
for(var i=0;i<=myarr.length;i++){
sum +=parseInt(myarr[i].substr(myarr[i].indexOf(":")+1))
}
document.write('班级总分为'+sum);
document.write(year+'年'+month+"月"+day+"日"+myweek+'平均分:'+Math.round(sum/myAr.length));
</script>
</head>
<body>
</body>
</html>
1回答
-
- 裸奔的凯子哥
- 2016-09-30 01:17:03
<!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"> var mydate = new Date(); var year = mydate.getFullYear(); var month = mydate.getMonth() + 1; var day = mydate.getDate(); var week = ["星期日", '星期一', '星期二', '星期三', '星期四', '星期五', '星期六']; var myweek = week[mydate.getDay()]; 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 myarr = sorceStr.split(";"); var sum = 0; for (var i = 0; i < myarr.length; i++) { var num = myarr[i].split(':')[1]; sum += parseInt(num); } document.write('班级总分为' + sum); document.write(year + '年' + month + "月" + day + "日" + myweek + '平均分:' + Math.round(sum / myarr.length)); </script> </head> <body> </body> </html>
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