asp.net 12 AJAX

Javascript:ajax

Ajax:get

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AjaxDemo.aspx.cs" 
    Inherits="CZBK.ItcastProject.WebApp._2015_6_2.AjaxDemo" %>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <script src="../Js/jquery-1.7.1.js"></script>
    <script type="text/javascript">
        $(function () {
            $("#btnGetDate").click(function () {
                //开始通过AJAX向服务器发送请求.
                var xhr;
                if (XMLHttpRequest) {//表示用户使用的高版本IE，谷歌，狐火等浏览器
                    xhr = new XMLHttpRequest();
                } else {// 低IE
                   xhr=new ActiveXObject("Microsoft.XMLHTTP");
                }
                xhr.open("get", "GetDate.ashx?name=zhangsan&age=12", true);
                xhr.send();//开始发送
                //回调函数:当服务器将数据返回给浏览器后，自动调用该方法。
                xhr.onreadystatechange = function () {
                    if (xhr.readyState == 4) {//表示服务端已经将数据完整返回，并且浏览器全部接受完毕。
                        if (xhr.status == 200) {//判断响应状态码是否为200.
                            alert(xhr.responseText);
                        }
                    }
                }
            });
        });
    </script>
</head>
<body>
    <form id="form1"  runat="server">
    <div>
    <input type="button" value="获取服务端时间" id="btnGetDate" />
    </div>
    </form>
</body>
</html>

Ajax:post

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AjaxPostDemo.aspx.cs" Inherits="CZBK.ItcastProject.WebApp._2015_6_2.AjaxPostDemo" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <script src="../Js/jquery-1.7.1.js"></script>
    <script type="text/javascript">
        $(function () {
            $("#btnPost").click(function () {
                var xhr;
                if (XMLHttpRequest) {
                    xhr = new XMLHttpRequest();
                } else {
                    xhr = new ActiveXObject("Microsoft.XMLHTTP");
                }
                xhr.open("post", "GetDate.ashx", true);
                xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
                xhr.send("name=zhangsan&pwd=123");
                xhr.onreadystatechange = function () {
                    if (xhr.readyState == 4) {
                        if (xhr.status == 200) {
                            alert(xhr.responseText);
                        }
                    }
                  }
            });
        });
    </script>
</head>
<body>
    <form id="form1" runat="server" >
    <div>
    <input type="button" value="获取数据" id="btnPost" />
        
    </div>
    </form>
</body>
</html>

**服务器端可以自动判断Get/Post请求，来接受参数

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace CZBK.ItcastProject.WebApp._2015_6_2
{
    /// <summary>
    /// GetDate 的摘要说明
    /// </summary>
    public class GetDate : IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            context.Response.Write(context.Request["name"]);
            //context.Request.Form[""] POST
            //context.Request.QueryString GET
            //context.Request[""]  服务器端自动判断 Post/Get
        }

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

 

 

Jquery:ajax

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="JqueryAjax.aspx.cs" Inherits="CZBK.ItcastProject.WebApp._2015_6_2.JqueryAjax" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <script src="../Js/jquery-1.7.1.js"></script>
    <script type="text/javascript">
        $(function () {
            $("#btnGet").click(function(){
                $.get("GetDate.ashx", { "name": "lisi", "pwd": "123" }, function (data) {
                    alert(data)
                });

            });

            $("#btnPost").click(function () {
                $.post("ShowDate.aspx", { "name": "lisi", "pwd": "123" }, function (data) {
                    alert(data)
                })
            });


            $("#btnAjax").click(function () {
                $.ajax({
                    type: "POST",
                    url: "GetDate.ashx",
                    data: "name=John&location=Boston",
                    success: function (msg) {
                        alert("Data Saved: " + msg);
                    }
                });

            });
        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <input type="button" value="GET获取数据" id="btnGet" />
        <input type="button" value="POST获取数据" id="btnPost" />
        <input type="button" value="AJAX获取数据" id="btnAjax" />
    </div>
    </form>
</body>
</html>

 

posted @ 2018-08-02 16:25  youguess  阅读(118)  评论(0)  编辑  收藏  举报