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来源：2-7 编程练习

宣与慕

2022-04-11 09:42:43

<!DOCTYPE html>
<html lang="en">

<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>Document</title>
</head>

<body>
    <script>
        const arr = ["i", "m", "o", "o", "c"]
        for (const [index, value] of arr.entries()) {
            if (value === 'o') {
                arr[index] = value.toUpperCase();
                break;
            }
        }
        console.log(arr);
    </script>
</body>

</html>

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