求這段二維數(shù)組為什么創(chuàng)建不成功
想把分?jǐn)?shù)全輸出
<!DOCTYPE ?HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>系好安全帶,準(zhǔn)備啟航</title>
<script type="text/javascript">
? var scoreStr = "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 students = scoreStr.split(";");
?
? ? for(var i = 0 ; i < students.length ; i++){
? ????????var students[i] = students[i].split(":");
? ? ? ? ? document.write(students[i][1] + " ?");
? ? }
??
</script>
</head>
<body>
</body>
</html>
2018-01-19
你students已經(jīng)定義過(guò)一次了，for循環(huán)中又定義了一次? ?重復(fù)定義一個(gè)變量了啊
var aa = scoreStr.split(";");
var sum = 0;
for(var a=0; a<aa.length;a++){
? ?sum = sum + parseInt(aa[a].split(":")[1]);
}