老师帮忙检查一下

来源：4-7 编程练习

海波_

2021-06-20 11:43:54

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>二维数组</title>
</head>

<body>
    <script>

        var arr = [["慕", "课", "网"], ["程", "序", "员"], ["梦", "工", "厂"]];
        var str = [];
        for (var i = 0; i < 3; i++) {
            for (var j = 0; j < 3; j++) {
                str.push(arr[i][j]);

            }
        }
        str.splice(3, 0, "，");
        str.splice(7, 0, "的");
        str.join('');
        console.log(str);

    </script>
</body>

</html>