console.log에 달력 출력하기

알로호모라 2021. 4. 19. 09:25
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Document</title>
</head>
<body>
   <script type="text/javascript">

      function makeCalendar(y, m) {
         console.log(y + '년 ' + m + '월');
         console.log("  일 월 화 수 목 금 토");

         let startDay = new Date(y, m - 1, 1).getDay();
         let endDate = new Date(y, m, 0).getDate();

         let line = '';
         for (let i = 0; i < startDay; i++) {
            line += '   ';
         }

         if (startDay == 0) {
            startDay = 7;
         }
         for (let i = 1; i <= endDate; i++) {
            line += ' ';
            if (i < 10)
               line += ' ';
            line += i;
            if (i % 7 == 7 - startDay) {
               console.log(line);
               line = '';
            }
         }
         if (line != '')
            console.log(line);
         console.log('');
      }
      makeCalendar(2021, 2);
      makeCalendar(2021, 3);
      makeCalendar(2021, 4);

   </script>
</body>
</html>