jQuery实现简单三级联动效果

(编辑：jimmy 日期: 2024/5/8 浏览：3 次 )

本文实例为大家分享了jQuery实现简单三级联动的具体代码，供大家参考，具体内容如下

首先写一个JSON数据

[
 {
  "province": "吉林省",
  "cities": [
   {
    "city": "长春市",
    "counties": ["朝阳区", "经济开发区", "高新区"]
   },
   {
    "city": "吉林市",
    "counties": ["东城区", "经济开发区", "老城区"]
   },

   {
    "city": "白山市",
    "counties": ["二道区", "河东区", "高新区"]
   }
  ]
 },
 {
  "province": "辽宁省",
  "cities": [
   {
    "city": "沈阳市",
    "counties": ["朝阳区", "经济开发区", "高新区"]
   },
   {
    "city": "大连市",
    "counties": ["东城区", "经济开发区", "老城区"]
   },
   {
    "city": "铁岭市",
    "counties": ["二道区", "河东区", "高新区"]
   }
  ]
 },
 {
  "province": "山东省",
  "cities": [
   {
    "city": "青岛市",
    "counties": ["朝阳区", "经济开发区", "高新区"]
   },
   {
    "city": "济南市",
    "counties": ["东城区", "经济开发区", "老城区"]
   },
   {
    "city": "威海市",
    "counties": ["二道区", "河东区", "高新区"]
   }
  ]
 }
]

然后用Ajax动态获取JSON文件中的数据

完整代码

<!DOCTYPE html>
<html lang="en">
 <head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>三级联动</title>
 </head>
 <body>
  <!-- 三级联动 - 两个二级联动 -->
  <select id="province">
   <option value="">---</option>
  </select>
  <select id="city">
   <option value="">---</option>
  </select>
  <select id="county">
   <option value="">---</option>
  </select>

  <script src="/UploadFiles/2021-04-02/jquery-1.12.4.js">

效果如下

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

上一篇：js实现搜索提示框效果
下一篇：javascript canvas实现简易时钟例子