TypeError: myarr[i] is undefined [報(bào)錯(cuò)]
報(bào)錯(cuò)。
<!DOCTYPE ?HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk" />
<title>系好安全帶,準(zhǔn)備啟航</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;小紅:97;小天:76;小張: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('班級總分為'+sum);
? ? document.write(year+'年'+month+"月"+day+"日"+myweek+'平均分:'+Math.round(sum/myAr.length));
? ??
? ? </script>
</head>
<body>
</body>
</html>
2016-09-30
<!DOCTYPE??HTML> <html> <head> ????<meta?http-equiv="Content-Type"?content="text/html;?charset=UTF-8"?/> ????<title>系好安全帶,準(zhǔn)備啟航</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;小紅:97;小天:76;小張: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('班級總分為'?+?sum); ????????document.write(year?+?'年'?+?month?+?"月"?+?day?+?"日"?+?myweek?+?'平均分:'?+?Math.round(sum?/?myarr.length)); ????</script> </head> <body> </body> </html>