Js cross domain access sample of of client and server

 
<div id="oid"></div> 
<script type="text/javascript"> 
//To get the article number
$.ajax({ 

url: "http://192.168.1.191/H.ashx", 
type: "GET", 
dataType: 'jsonp', 
//The value of jsonp is custom, and if a jsoncallback is used, an object corresponding to the value of the jsoncallback is returned on the server side.
jsonp: 'jsoncallback', 
//To pass the parameter, no pass parameters, must also be written
data: null, 
timeout: 5000, 
//Return Json type
contentType: "application/json;utf-8", 
//The object returned by the server segment contains name,openid.
success: function (result) { 

document.getElementById('oid').innerText=result.name+" : "+result.openid; 
}, 
error: function (jqXHR, textStatus, errorThrown) { 
alert(textStatus); 
} 
}); 

</script> 

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

using System; 
using System.Web; 

public class H : IHttpHandler { 

public void ProcessRequest (HttpContext context) { 
context.Response.ContentType = "text/plain"; 

string result = context.Request.QueryString["jsoncallback"] + "({"name":" Test number: ","openid":"123456789"})"; 

context.Response.Clear(); 
context.Response.Write(result); 
context.Response.End(); 


} 

public bool IsReusable { 
get { 
return false; 
} 
} 

}