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来源：2-7 编程练习

慕粉1112348

2024-02-25 20:57:47

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
 
</head>

<body>
    <script>
        const arr = ["i", "m", "o", "o", "c"]
        //    在此补充代码
        for(const [index,value] of arr.entries()){
            if(index===2){
                arr[2]=value.toUpperCase();
                break
            }
        }
        console.log(arr)
    </script>
</body>
</html>

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