[jQuery] Acessing Json Data

[jQuery] Acessing Json Data


Hi,
I'm sending an array encoded with Json in my PHP code server-side, but
when I try to fetch it in JQuery, I don't know what is the type of the
object I'm dealing with, and I can't get any information of it.
I tried to access it with object.length, object[index] and so on, but
I'm allways getting "undefined".
PHP Code:
//example array
$arr = array ('a'=>1,'b'=>2,'c'=>3,'d'=>4,'e'=>5);
echo json_encode($arr);
JavaScriptCode:
             $.ajax
             ({
                            type: "POST",
                            url: "/script/",
                            dataType : "json",
                            data: "id="+$("#distritos").val(),
                            success: function(data)
                            {
                                alert(data.lenght);
                            }
                });
I would be very grateful if anyone could help me,
Cheers,
Ygor