Jquery 使用Ajax获取后台返回的Json数据后,页面处理

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script src="JS/jquery-1.8.0.min.js" type="text/javascript"></script>
    <script type="text/javascript">
     $(function () {
         $.ajax({
             url: 'jsondata.ashx',
             type: 'GET',
             dataType: 'json',
             timeout: 1000,
             cache: false,
             beforeSend: LoadFunction, //加载执行方法  
             error: erryFunction,  //错误执行方法  
             success: succFunction //成功执行方法  
         })
         function LoadFunction() {
             $("#list").html('加载中...');
         }
         function erryFunction() {
             alert("error");
         }
         function succFunction(tt) {
             $("#list").html('');

             //eval将字符串转成对象数组
             //var json = { "id": "10086", "uname": "zhangsan", "email": "zhangsan@qq.com" };
             //json = eval(json);
             //alert("===json:id=" + json.id + ",uname=" + json.uname + ",email=" + json.email);

             var json = eval(tt); //数组       
             $.each(json, function (index, item) {
                 //循环获取数据  
                 var name = json[index].Name;
                 var idnumber = json[index].IdNumber;
                 var sex = json[index].Sex;
                 $("#list").html($("#list").html() + "<br>" + name + " - " + idnumber + " - " + sex + "<br/>");
             });
         }
     });
    </script>
</head>
<body>
    <ul id="list">
    </ul>
</body>
</html>

<%@ WebHandler Language="C#" Class="jsondata" %>

using System;
using System.Web;
using System.Web.Script.Serialization;
using System.IO;
using System.Text;
using System.Collections.Generic;
using Newtonsoft.Json;
using System.Data;

public class jsondata : IHttpHandler {

    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/plain";
        string JsonStr = JsonConvert.SerializeObject(CreateDT());
        context.Response.Write(JsonStr);
        context.Response.End();
    }

    #region 创建测试数据源
    //创建DataTable
    protected DataTable CreateDT()
    {
        DataTable tblDatas = new DataTable("Datas");
        //序号列
        //tblDatas.Columns.Add("ID", Type.GetType("System.Int32"));
        //tblDatas.Columns[0].AutoIncrement = true;
        //tblDatas.Columns[0].AutoIncrementSeed = 1;
        //tblDatas.Columns[0].AutoIncrementStep = 1;
        //数据列
        tblDatas.Columns.Add("IdNumber", Type.GetType("System.String"));
        tblDatas.Columns.Add("Name", Type.GetType("System.String"));
        tblDatas.Columns.Add("BirthDate", Type.GetType("System.String"));
        tblDatas.Columns.Add("Sex", Type.GetType("System.String"));
        tblDatas.Columns.Add("Wage", Type.GetType("System.Decimal"));
        tblDatas.Columns.Add("Bonus", Type.GetType("System.Decimal"));
        //统计列开始
        tblDatas.Columns.Add("NeedPay", Type.GetType("System.String"), "Wage+Bonus");
        //统计列结束
        tblDatas.Columns.Add("Address", Type.GetType("System.String"));
        tblDatas.Columns.Add("PostCode", Type.GetType("System.String"));
        //设置身份证号码为主键
        tblDatas.PrimaryKey = new DataColumn[] { tblDatas.Columns["IdNumber"] };

        tblDatas.Rows.Add(new object[] { "43100000000000", "张三", "1982", "0", 3000, 1000, null, "深圳市", "518000" });
        tblDatas.Rows.Add(new object[] { "43100000000001", "李四", "1983", "1", 3500, 1200, null, "深圳市", "518000" });
        tblDatas.Rows.Add(new object[] { "43100000000002", "王五", "1984", "1", 4000, 1300, null, "深圳市", "518000" });
        tblDatas.Rows.Add(new object[] { "43100000000003", "赵六", "1985", "0", 5000, 1400, null, "深圳市", "518000" });
        tblDatas.Rows.Add(new object[] { "43100000000004", "牛七", "1986", "1", 6000, 1500, null, "深圳市", "518000" });
        return tblDatas;
    }
    #endregion 

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}

<!--
        <script type="text/javascript">
        $(function () {
            $.ajax({
                url: 'jsondata.ashx',
                type: 'GET',
                dataType: 'json',
                timeout: 1000,
                cache: false,
                beforeSend: LoadFunction, //加载执行方法  
                error: erryFunction,  //错误执行方法  
                success: succFunction //成功执行方法  
            })
            function LoadFunction() {
                $("#list").html('加载中...');
            }
            function erryFunction() {
                alert("error");
            }
            function succFunction(tt) {
                $("#list").html('');

                //eval将字符串转成对象数组
                //var json = { "id": "10086", "uname": "zhangsan", "email": "zhangsan@qq.com" };
                //json = eval(json);
                //alert("===json:id=" + json.id + ",uname=" + json.uname + ",email=" + json.email);

                var json = eval(tt); //数组       
                $.each(json, function (index, item) {
                    //循环获取数据  
                    var Key = json[index].key;
                    var Info = json[index].info;
                    //                 var idnumber = json[index].IdNumber;
                    //                 var sex = json[index].Sex;
                    $("#list").html($("#list").html() + "<br>" + Key + "----" + Info.name); //+ " - " + idnumber + " - " + sex + "<br/>");
                });
            }
        });
    </script>
-->

<%@ WebHandler Language="C#" Class="jsondata" %>

using System;
using System.Web;
using System.Web.Script.Serialization;
using System.IO;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using System.Data;

public class jsondata : IHttpHandler {

    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/plain";
        context.Response.Cache.SetNoStore();
        string data = "[{"key":"1","info":{"name":"222","age":"333","sex":"444"}},{"key":"2","info":{"name":"999","age":"000","sex":"111"}}]";
        context.Response.Write(new JavaScriptSerializer().Serialize(data));
    }


    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test2013.aspx.cs" Inherits="Test2013" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
   <script src="JS/jquery-1.8.0.min.js" type="text/javascript"></script>  
   <script type="text/javascript">
       function GetPara(o) {
           var sortid = $(o).val();
           $.ajax({
               url: 'GetPara.ashx?type=get&sortid=' + sortid,
               type: 'GET',
               dataType: 'json',
               timeout: 3000,
               cache: false,
               beforeSend: LoadFunction, //加载执行方法    
               error: erryFunction,  //错误执行方法    
               success: succFunction //成功执行方法    
           })
           function LoadFunction() {
               $("#list").html('加载中...');
           }
           function erryFunction() {
               alert("error");
           }
           function succFunction(tt) {
               $("#list").html('');
               var json = eval(tt); //数组
               $.each(json, function (index, item) {
                   //循环获取数据    
                   var Id = json[index].id;
                   var Name = json[index].name;
                   $("#list").html($("#list").html() + "<br>" + Name + "<input type='text' id='" + Id + "' /><br/>");
               });
           }
       };


       function SavePara() {
           var parameter = {};
           $("#list input:text").each(function () {
               var key = $(this).attr("id");
               var value = $(this).val();
               parameter[key] = value;
           });	

           $.ajax({
               url: 'GetPara.ashx?type=save',
               type: 'POST',
               dataType: 'json',
               data: parameter,
               timeout: 3000,
               cache: false,
               beforeSend: LoadFunction, //加载执行方法    
               error: erryFunction,  //错误执行方法    
               success: succFunction //成功执行方法    
           })
           function LoadFunction() {
           }
           function erryFunction() {
           }
           function succFunction(tt) {
           }
       };
   </script>  

</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:DropDownList ID="ddl1" runat="server" onchange="GetPara(this)">
        </asp:DropDownList>
        <ul id="list"></ul>

        <input type="button" value="保存数据" onclick="SavePara()" />
    </div>
    </form>
</body>
</html>

<%@ WebHandler Language="C#" Class="GetPara" %>

using System;
using System.Web;
using System.Data;
using System.Collections.Generic;
using System.Web.Script.Serialization;  


public class GetPara : IHttpHandler {    
    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
        string SortId = context.Request["sortid"];
        string Type = context.Request["type"];
        if (Type=="get")
        {
            if (!string.IsNullOrEmpty(SortId))
            {
                DataTable dt = MSCL.SqlHelper.GetDataTable("select * from PR_PRODUCTPARAS where sortid='" + SortId + "' ");
                List<Paras> list = new List<Paras>();
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    Paras a = new Paras();
                    a.id = dt.Rows[i]["PARAID"].ToString();
                    a.name = dt.Rows[i]["PARANAME"].ToString();
                    list.Add(a);
                }
                context.Response.Write(new JavaScriptSerializer().Serialize(list));
            }
        }
        else if (Type == "save")
        {
            //反序列化json 
            System.IO.Stream stream = context.Request.InputStream;
            System.IO.StreamReader sr = new System.IO.StreamReader(stream, System.Text.Encoding.GetEncoding("UTF-8"));
            string sJson = sr.ReadToEnd();
            if (sJson.Contains("&"))
            {
                string[] sArr = sJson.Split('&');
                for (int i = 0; i < sArr.Length; i++)
                {
                    string[] sArr1 = sArr[i].Split('=');
                    object id = sArr1[0];
                    object value = sArr1[1];
                }
            }
        }
        else
        { }
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

    public struct Paras
    {
        public string id;
        public string name; 
    }
}

相关阅读:
网页中这 10 种字体的运用方式，不会让人觉得 Low
如何估算文章阅读时长？
如何养出一个三十几亿身家的儿子
 2018免费的隐私保护工具
 写一份好的产品说明书
 安装 Ubuntu 19.10 选用 zfs 文件系统
 ESXI常用命令
 Harbor ($docker login) Error saving credentials
Vue中使用matomo进行访问流量统计的实现
 eslint Cannot read property 'range' of null错误
原文地址：https://www.cnblogs.com/smartsmile/p/6234236.html