TypeError: myarr[i] is undefined [报错]
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>