javascript_practice/array_gugudan.html at master · beaver84/javascript_practice · GitHub

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<!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>
    <h1>구구단 전체 출력</h1>
    <script>
        var result = [];
        for (var n = 2; n <= 9; n++){
            //calculate
            for ( var i = 1; i <= 9; i++){
                result[i] = n * i;
            }
            document.write("<h2>" + n + "단</h2>");
            for (var i = 1; i <=9; i++){
                var str = "";
                //str = str + n;
                str += n;
                str += " X "
                str += i;
                str += result[i];
                str += " <br>";
                document.write(str);
            }
        }
    </script>
</body>
</html>