// 1. 定義獎項並隨機打亂 (洗牌) const prizes = ["A賞", "A賞", "B賞", "B賞", "C賞", "D賞", "E賞" /* ...其餘獎項 */]; const totalTickets = prizes.length; // 將獎項隨機洗牌，並與 1~N 號碼綁定 const board = prizes .sort(() => Math.random() - 0.5) .map((prize, index) => ({ id: index + 1, // 籤的號碼 (1, 2, 3...) prize: prize, // 背後隱藏的獎項 isDrawn: false // 是否已被抽走 })); let remainingCount = totalTickets; // 2. 玩家指定號碼抽籤 function drawByNumber(ticketId) { const ticket = board.find(t => t.id === ticketId); if (!ticket) return "找不到此號碼！"; if (ticket.isDrawn) return `號碼 ${ticketId} 已經被抽過了，請重新選號！`; // 標記為已抽走 ticket.isDrawn = true; remainingCount--; let result = `你選擇了 ${ticket.id} 號，抽中：${ticket.prize}！`; // 觸發 LAST 賞 if (remainingCount === 0) { result += " 🎉 恭喜抽中最後一張，獲得 LAST 賞！"; } return result; }