首页 网页制作网络编程脚本专栏数据库网站运营网络安全平面设计CMS教程

js实现按座位号抽奖

所属分类： 网络编程 / JavaScript 阅读数： 1896
收藏 0 赞 0 分享

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脚本之家！

更多精彩内容其他人还在看

Angular使用Md5加密的解决方法

这篇文章主要介绍了Angular使用Md5加密的解决方法,需要的朋友可以参考下
收藏 0 赞 0 分享

详解JS构造函数中this和return

本文通过实例代码给大家介绍了JS构造函数中this和return，需要的朋友参考下吧
收藏 0 赞 0 分享

ES6中Array.find()和findIndex()函数的用法详解

ES6为Array增加了find()，findIndex函数。find()函数用来查找目标元素，找到就返回该元素，找不到返回undefined，而findIndex()函数也是查找目标元素，找到就返回元素的位置，找不到就返回-1。下面通过实例详解，需要的朋友参考下吧
收藏 0 赞 0 分享

JS闭包的几种常见形式实例详解

本文通过实例代码给大家详细介绍了js闭包的几种常见形式，代码简单易懂，非常不错，具有参考借鉴价值，需要的朋友参考下
收藏 0 赞 0 分享

ES6中Array.copyWithin()函数的用法实例详解

ES6为Array增加了copyWithin函数，用于操作当前数组自身，用来把某些个位置的元素复制并覆盖到其他位置上去。下面重点给大家介绍ES6中Array.copyWithin()函数的用法，需要的朋友参考下
收藏 0 赞 0 分享

Javascript 严格模式use strict详解

严格模式：由ECMA-262规范定义的JavaScript标准，对javascrip的限制更强。这篇文章主要介绍了Javascript 严格模式use strict详解 ,需要的朋友可以参考下
收藏 0 赞 0 分享

引入JavaScript时alert弹出框显示中文乱码问题

今天在HTML中引入JavaScript文件运行时，alert弹出的提示框中文显示为乱码，怎么解决此问题呢？下面小编给大家带来了引入JavaScript时alert弹出框显示中文乱码问题的解决方法，一起看看吧
收藏 0 赞 0 分享

AngularJs 延时器、计时器实例代码

这篇文章主要介绍了AngularJs 延时器、计时器实例代码,需要的朋友可以参考下
收藏 0 赞 0 分享

JS分页的实现（同步与异步）

这篇文章主要介绍了JS分页的实现（同步与异步）,需要的朋友可以参考下
收藏 0 赞 0 分享

Angularjs自定义指令实现分页插件(DEMO)

由于最近的一个项目使用的是angularjs1.0的版本，涉及到分页查询数据的功能，后来自己就用自定义指令实现了该功能，下面小编把实例demo分享到脚本之家平台，需要的朋友参考下
收藏 0 赞 0 分享
查看更多

网络赚钱

更多

站长故事

更多
建站极客
合作伙伴
在线工具
建站极客移动版
聚合全网技术文章，根据你的阅读喜好进行个性推荐
© 2012 - 2020 www.zhanzhang360.cn Some Rights Reserved.
沪ICP备13040166号-22