使用Javascript的Ajax请求

I have to make ajax request for mobile web app, I used the following code

$.ajax({
        type: type, //GET or POST or PUT or DELETE verb
        url: requestURL, // Location of the service        
        //  contentType: "application/x-www-form-urlencoded", // content type sent to server

        dataType: "xml", //Expected data format from server
        processData: false, //True or False
        success: successCallback, //On Successfull service call
        error: serviceFailed// When Service call fails
    });

But it failed with error "Error: Access is denied. I am calling .aspx service from javascript

You cannot submit AJAX requests to domains other than the one serving the web page. If it is a sub domain causing the problems, you can use this code to resolve it.

document.domain = location.host.replace(/^.*?([^.]+\.[^.]+)$/g,'$1');