<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>My JavaScript</title>
</head>
<body>
<script src="main.js"></script>
</body>
</html>main.js
'use strict';
{
const scores = [
70,
95,
80,
85,
];
let sum = 0;
// console.log(scores[0]);
// console.log(scores[1]);
// console.log(scores[2]);
// console.log(scores[3]);
scores.forEach((score, index) => {
// console.log(score);
sum += score;
console.log(`${index}: ${score}`);
});
console.log(`Sum: ${sum}`);
console.log(`Average: ${sum / scores.length}`);
}