<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>二维数组</title>
</head>
<body>
<script>
let score=
[
[12,15,78],
[76,78.5,79.8],
[84.1,85,84]]
let total;
let max;
let min;
let avg;
for (let i = 0; i <score.length ; i++) {
total=0
max=min=score[i][0]
for (let j = 0; j<score[i].length; j++) {
//score[i].length表示第i个数组里面含有多少个数值；
total+=score[i][j];
if(score[i][j]>max) max=score[i][j];
if(score[i][j]<min) min=score[i][j];
}
avg=total/score[i].length;
let str=`第${i+1}个班的总分为：${total},平均分为${avg},最高分为${max}最低分为${min}`
console.log(str)
}
</script>
</body>
</html>
原文：https://www.cnblogs.com/taoist123/p/11129209.html