Jquery asynchronous request data example code_jquery

1. Jquery requests data from the aspx page
Front page JS code:

Copy code The code is as follows:

$("#Button1").bind("click", function () {
$.ajax({
type: "post",
url: "default.aspx",
data: "name=" $("#Text1").val(),
success: function (result) {
alert(result.msg);
}
}) ;
});

Copy code The code is as follows:

Backend cs code:

Copy code The code is as follows:

protected void Page_Load(object sender, EventArgs e)
{
if (Request["name"]!=null)
{
Response.ContentType = "text/json";
Response.Write ("{"msg":"" Request["name"] ""}");//Piece the data into Json
Response.End();
}
}

2. Jquery requests data from the WebService page

Copy the code The code is as follows:

$("#Button2").bind("click", function () {
$.ajax({
type: "post",
contentType: "application/json",
url : "WebService.asmx/HelloWorld",
data: "{name:'" $("#Text1").val() "'}",
datatype: "json",
success: function (result) {
alert(result.d);
}
});
});

WebService code

Copy code The code is as follows:

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

/// Summary description for WebService
///

[WebService(Namespace = "http://tempuri.org/")]
[ WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class WebService : System.Web.Services.WebService {
public WebService () {
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod]
public string HelloWorld( string name) {
return "Hello World" name;
}
}

3. Jquery requests data from ashx The same
Js code as on the page:

Copy code The code is as follows:

$( "#Button3").bind("click", function () {
$.ajax({
type: "post",
url: "Handler.ashx",
data: " name=" $("#Text1").val(),
success: function (result) {
alert(result.msg);
}
});
}) ;

Backend code:

Copy code The code is as follows:

<%@ WebHandler Language="C#" Class="Handler" %>
using System;
using System.Web;
public class Handler : IHttpHandler {
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "text/json";
context.Response.Write("{"msg":"Hello World" context.Request["name"] "from handler.ashx "}");
context.Response.End();
}
public bool IsReusable {
get {
return false;
}
}
}

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