宝くじ

<p>当たる確率が高すぎる宝くじ</p>
<input id="omikuji" type="button" value="宝くじを買う">
<style type="text/css">
#omikuji{ color: red; }
　 <script>
      document.getElementById("omikuji").onclick = function(){
      let rnd = Math.floor( Math.random() * 23 );

      switch(rnd){
          case 0:
              omikuji = "1円あたり";
              break;
          case 1:
              omikuji = "はずれ";
              break;
          case 2:
              omikuji = "はずれ";
              break;
          case 3:
              omikuji = "全財産が消える";
              break;
          case 4:
              omikuji = "100円あたり";
              break;
          case 5:
              omikuji = "100000000円あたり";
              break;
           case 6:
              omikuji = "-1000000円あたり";
           case 7:
              omikuji = "-1円あたり";
              break;
           case 8:
              omikuji = "はずれ";
              break;
           case 9:
              omikuji = "はずれ";
              break;
           case 10:
              omikuji = "はずれ";
              break;
           case 11:
              omikuji = "はずれ";
              break;
           case 12:
              omikuji = "はずれ";
              break;
           case 13:
              omikuji = "はずれ";
              break;
           case 14:
              omikuji = "はずれ";
              break;
           case 15:
              omikuji = "はずれ";
              break;
           case 16:
              omikuji = "はずれ";
              break;
           case 17:
              omikuji = "はずれ";
              break;
           case 18:
              omikuji = "はずれ";
              break; 
           case 19:
              omikuji = "はずれ";
              break;
           case 20:           
              omikuji = "はずれ";
              break;
           case 21:
              omikuji = "はずれ";
              break;
           case 22:
              omikuji = "全財産が消える";
              break;
        button1.value = "はずれ"


              break;
          default:
              omikuji = "10000円あたり";
              break;
      }
      alert(omikuji);
    }
</script>