Undefined values returned by JSON

According to my previous post I am trying to get back some information from a RESTful interface using JSON. I am working on JQuery 1.5.

The problem I face is that I get back as a result undefined values. I am not able to use firebug because my application is developed using PhoneGap and the app is running on the iPhone's simulator.

If I visit the RESTful interface (I type the "example.json" url in a browser - where example is a valid url created by ano开发者_开发百科ther developer) returns me results with the following format:

[{"person":{"created_at":"2011-07-18T17:51:33Z","id":1,"name":"John","age":60,"surname":"Smith","car_id":1,"updated_at":"2011-07-18T17:51:33Z"}},{"person":{"created_at":"2011-07-18T17:51:35Z","id":1,"name":"Johnny","age":50,"surname":"Deep","car_id":2,"updated_at":"2011-07-18T17:51:35Z"}}]

I need to get the information id, name, age and store them in an array (not an html table). Just to see if the connection returns any values I use the code:

    var jqxhr = $.getJSON("example.json", function(person) {
        $.each(person, function(i, person) {
            alert(person.name);
            alert(person.age);
        });
    })
    .success(function() { alert("second success"); })
    .error(function() { alert("Cannot connect to the SWT's maps. Please try again later!"); })
    .complete(function() { alert("complete"); });

So, why do I get by the alert undefined as values?

This code should work:

var jqxhr = $.getJSON("example.json", function(person) {
        $.each(person, function(i, item) {
            alert(item.person.name);
            alert(item.person.age);
        });
    })
    .success(function() { alert("second success"); })
    .error(function() { alert("Cannot connect to the SWT's maps. Please try again later!"); })
    .complete(function() { alert("complete"); });

are you sure of your code ? try:

var jqxhr = $.getJSON("example.json", function(data) {
 $.each(data, function(i, item) {
        alert(item.name);
        alert(item.age);
    });
}

Hope this helps