Two days ago, I came across a problem. After building a restful web service for my app. I happily tried to access the data from the web service using phone. I sent request for data from server using following code:

$.ajax({
    url: \'http://192.168.1.102:808/quser\',
    type: \'GET\',
    dataType: \'json\',
	async :false,
    error : function (xhr, ajaxOptions, thrownError) {
	    alert(xhr.readyState);
        alert(xhr.status);
        alert(thrownError);
      }, 
    success: function (data) {
        alert(data);
    }
});
}

　　I used Intel XDK environment. emulator can return data. But when I test with real phone(both iphone and android) , xhr.status returned value 0. I started to search why this happened. Finally, I was aware of this cross domain request problem. Then start to search \'phone gap cross domain request\'. Overall, they give two solutions:

• JSON response header has Access-Control-Allow-Origin set to allow access to the domain: this is not very common since it poses a security risk. More information here.
• JSON supports padding (JSONP): This is more commonly used by APIs to allow developers to access their data.

    I tried both, but none of them work. 

    I started feeling bad and disappointed. I went through a hard time :( , But this time, I didn\'t give up. Kept searching, kept believing that every problem in engineering must get a corresponding solution for it. Answer is here:http://software.intel.com/en-us/html5/articles/how-to-access-JSON-data-in-HTML5-apps.

Adding following two tags in our file. 

<script src="intelxdk.js"></script>
<script src="xhr.js"></script>

intelxdk.js and xhr.js actual files are not required,it will be included automatically in Intel XDK tools, just the script tags should be included.
Then I use the statement suggested from this site:

$.getJSON("http://time.jsontest.com", function(data){
    alert(data);
});

　Amazingly, it did work!!!!!Cheers!!!!!

PS: XDK is really easy to use for beginners.