<body> <script> //2중 for문 - 2,3,4단 출력 for (j = 2; j <= 5; j++) { document.write(j + "단<br>") for (i = 1; i < 10; i++) { document.write(j + "*" + i + "=" + 2 * i + "<br>") } document.write("<hr>") } </script> </body>