php ajax关于省市联动

Posted 2023-05-15

前台获取城市ID调ajax取城区值

后台接受城市ID查询城区ID 名称返回到前台

现在取也取到了 可是问题是怎么放到select里面？求大神知道 列如图一 选择上海 返回 浦东新区和普陀区怎么放到select里的option里面呢？

$('option', '#area').reomove();
$.each(data, function(index, ary)
$('#area').append("<option value='"+ary['id']+"'>"+ary['countyName']+"</option>");
);

放在你的ajax方法里。

参考技术A var strValue=$("#select_id").val(); //获取Select选择的Value
var
strText=$("#select_id").find("option:selected").text();

//获取Select选择的text

参考http://wangjc-opal.iteye.com/blog/813824

JQuery+Ajax制作省市联动

 1 $(document).ready(function () {
 2             $("#Province").append("<option value=‘‘>" + "--请选择--" + "</option>");
 3             $("#City").append("<option value=‘‘>" + "--请选择--" + "</option>");
 4             $("#District").append("<option value=‘‘>" + "--请选择--" + "</option>");
 5             $.ajax({
 6                 url: "Handler1.ashx?type=0", //路径 地址
 7                 type: "get", //类型，post\get
 8                 dataType: "json", //json数据
 9                 success: function (msg) {//返回结果   
10                     for (var i = 0; i < msg.length; i++) {
11                         $("#Province").append("<option value=‘" + msg[i].ProvinceID + "‘>" + msg[i].ProvinceName + "</option>");
12                     }
13                 }
14             });
15             //市
16             $("#Province").change(function () {
17                 $("#City").empty(); //清空数据
18                 $("#District").empty(); //清空数据
19                 $("#District").append("<option value=‘‘>" + "--请选择--" + "</option>");
20                 var ProvinceID = $(this).val();
21                 
22                 $.ajax({
23                     url: "Handler1.ashx?type=1",
24                     type: "get", //类型
25                     data: {
26                         ProvinceID: ProvinceID
27                     },
28                     dataType: "json", //json数据
29                     success: function (msg) {
30                         for (var i = 0; i < msg.length; i++) { $("#City").append("<option value=‘" + msg[i].CityID + "‘>" + msg[i].CityName + "</option>"); }
31                     }
32                 });
33             });
34 
35             //区
36             $("#City").change(function () {
37                 $("#District").empty(); //清空数据
38                 var CityID = $(this).val();
39                 $.ajax({
40                     url: "Handler1.ashx?type=2",
41                     type: "get", //类型
42                     data: {
43                         CityID: CityID
44                     },
45                     dataType: "json", //json数据  
46                     success: function (msg) {
47                         for (var i = 0; i < msg.length; i++) { $("#District").append("<option value=‘" + msg[i].DistrictID + "‘>" + msg[i].DistrictName + "</option>"); }
48                     }
49                 });
50 
51             });
52         });
53 
54 <select id="Province"></select>
55 <select id="City"></select>
56 <select id="District" ></select>
57         

结合ajax（一般处理程序）

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Data;
 6 using System.Web.Script.Serialization;
 7 
 8 namespace GovSystem.Company
 9 {
10     /// <summary>
11     /// Handler1 的摘要说明
12     /// </summary>
13     public class Handler1 : IHttpHandler
14     {
15        
16         public string text;
17         public void ProcessRequest(HttpContext context)
18         {
19             int action = Convert.ToInt32(context.Request.QueryString["type"]);
20             switch (action)
21             {
22                 case (int)GetType.省:
23                     text = Sel_Province(context);
24                     break;
25                 case (int) GetType.市:
26                     text=Sel_City(context);
27                     break;
28                 case (int)GetType.区:
29                     text = Sel_District(context);
30                     break;
31             }
32             context.Response.ContentType = "text/plain";
33             context.Response.Write(text);
34         }
35         //省
36         private string Sel_Province(HttpContext context)
37         {
38             XieKe.BLL.S_Province b_Province = new XieKe.BLL.S_Province();
39             DataTable dt=b_Province.GetList("").Tables[0];
40             List<XieKe.Model.S_Province> listInfo = new List<XieKe.Model.S_Province>();
41             for (int i = 0; i < dt.Rows.Count; i++)
42             {
43                 XieKe.Model.S_Province m_Province = new XieKe.Model.S_Province { ProvinceID = long.Parse(dt.Rows[i]["ProvinceID"].ToString()), DateCreated = Convert.ToDateTime(dt.Rows[i]["DateCreated"]), DateUpdated = Convert.ToDateTime(dt.Rows[i]["DateUpdated"]), ProvinceName = dt.Rows[i]["ProvinceName"].ToString() };
44                 listInfo.Add(m_Province);
45             }
46             JavaScriptSerializer jssp = new JavaScriptSerializer();
47             string s= jssp.Serialize(listInfo);
48             return s;
49         }
50         //市
51         private string Sel_City(HttpContext context)
52         {
53             string ProvinceID = context.Request.QueryString["ProvinceID"];
54             XieKe.BLL.S_City b_City = new XieKe.BLL.S_City();
55 
56             DataTable dt = b_City.GetList("ProvinceID="+ProvinceID).Tables[0];
57             List<XieKe.Model.S_City> listInfo = new List<XieKe.Model.S_City>();
58             for (int i = 0; i < dt.Rows.Count; i++)
59             {
60                 XieKe.Model.S_City m_City = new XieKe.Model.S_City { CityID = long.Parse(dt.Rows[i]["CityID"].ToString()), CityName = dt.Rows[i]["CityName"].ToString(), DateCreated = Convert.ToDateTime(dt.Rows[i]["DateCreated"]), DateUpdated = Convert.ToDateTime(dt.Rows[i]["DateUpdated"]), ProvinceID = long.Parse(dt.Rows[i]["ProvinceID"].ToString()), ZipCode = dt.Rows[i]["ZipCode"].ToString() };
61                 listInfo.Add(m_City);
62             }
63             JavaScriptSerializer jssp = new JavaScriptSerializer();
64             return jssp.Serialize(listInfo);
65         }
66         //区
67         private string Sel_District(HttpContext context)
68         {
69             string CityID = context.Request.QueryString["CityID"];
70             XieKe.BLL.S_District b_City = new XieKe.BLL.S_District();
71             DataTable dt = b_City.GetList("CityID=" + CityID).Tables[0];
72             List<XieKe.Model.S_District> listInfo = new List<XieKe.Model.S_District>();
73             for (int i = 0; i < dt.Rows.Count; i++)
74             {
75                 XieKe.Model.S_District m_District = new XieKe.Model.S_District { CityID = Convert.ToInt32(dt.Rows[i]["CityID"]), DistrictName = dt.Rows[i]["DistrictName"].ToString() };
76                 listInfo.Add(m_District);
77             }
78             JavaScriptSerializer jssp = new JavaScriptSerializer();
79             return jssp.Serialize(listInfo);
80         }
81         public bool IsReusable
82         {
83             get
84             {
85                 return false;
86             }
87         }
88         public enum GetType
89         {
90             省 = 0,
91             市 = 1,
92             区 = 2,
93         };
94     }
95   
96 }