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js实现按座位号抽奖
站长资源 2024/12/24 佚名
54 1538
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最近一个项目需要实现一个按座位号抽奖的效果，抽奖现场有多个区域，抽奖时随机选取其中一个区域，再在这个区域中随机选取一排，最后在这排中随机选取一个座位号，区域、排号及座位号都不固定。

实现思路如下：

<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <title>抽奖</title>
</head>
<body>
  <p id="result"></p>
  <script>
    // 获取两个数之间的随机数
    function getRandom(min, max){
      var num = min + Math.floor(Math.random() * (max - min + 1));
      return num;
    }

    // 列举可以参加抽奖的座位号（第几区，第几排，第几列）
    var obj = {
      '001': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11]
      ],
      '002': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]
      ],
      '003': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
      ],
      '004': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
      ],
      '006': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
      ],
      '007': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
      ],
      '008': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21]
      ],
      '009': [
        [1, 2, 3, 4, 5],
        [1, 2, 3, 4, 5],
        [1, 2, 3, 4, 5],
        [1, 2, 3, 4, 5],
        [1, 2, 3, 4, 5],
        [1, 2, 3, 4, 5],
        [1, 2, 3, 4, 5],
        [1, 2, 3, 4, 5],
        [1, 2, 3, 4],
      ],
      'vip1': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38]
      ],
      'vip2': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38]
      ],
      'vip3': [
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38],
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38]
      ]
    };
    // 从对象中随机获取一个区域（索引）
    var getAreaRandomIndex = getRandom(0, Object.keys(obj).length - 1);
    // 再在上面得到的区域中再随机获取第几排（索引）
    var getRowsRandomIndex = getRandom(0, obj[Object.keys(obj)[getAreaRandomIndex]].length - 1);
    // 最后在上面得到的第几排中再随机获取第几号（索引）
    var getcolsRandomIndex = getRandom(0, obj[Object.keys(obj)[getAreaRandomIndex]][getRowsRandomIndex].length -1);
    // ----- 通过上面索引得到确切的座位号 -----
    // 得到第几区
    var area = Object.keys(obj)[getAreaRandomIndex];
    // 得到第几排
    var rows = getRowsRandomIndex + 1;
    // 得到第几列
    var cols = obj[Object.keys(obj)[getAreaRandomIndex]][getRowsRandomIndex][getcolsRandomIndex];

    // 将结果显示在页面上
    document.getElementById('result').innerHTML = '第' + area + '区, 第' + rows + '排, 第' + cols + '号';

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

以上就是本文的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，同时也希望多多支持！

标签：
js实现抽奖,js实现抽奖效果,js,座位号抽奖
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