JavaScript/AmPmCheck.html at master · BBoBBoM/JavaScript · 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>
    <script>
      const date = new Date();
      const hour = date.getHours();
      const check = hour <= 12;
      if (check) {
        alert(`${hour}오전입니다.`);
      }
      if (!check) {
        alert(`${hour}오후입니다.`);
      }
      alert("종료");

      const breakfast = 7 <= hour && hour <= 9;
      const lunch = 11 <= hour && hour <= 13;
      const dinner = 18 <= hour && hour <= 20;
      if (breakfast) {
        alert("아침을 먹을 시간입니다.");
      }
      if (lunch) {
        alert("점심을 먹을 시간입니다.");
      }
      if (dinner) {
        alert("저녁을 먹을 시간입니다.");
      }
      if (!breakfast && !lunch && !dinner) {
        alert("지금은 밥먹을 시간이 아닙니다");
      }
      alert("종료");
    </script>
  </body>
</html>