How to get jQuery to accept json response?

Question

Here are some simple Javascript:

(function($){
    var ajax_callback = function(data) { window.location.hash = data.h1; };
    $('.clickable').live('click', function() { 
             $.post('server.fcgi', {}, ajax_callback, 'json');
         }
    );
})(jQuery);

The server is a binary C ++ (yes, I know), which throws (via fast_cgi) line: {"h1":"newhash"}.

The expected behavior is that the URL should change. Instead, nothing happens and Firebug complains that the “data” is “null” !. Any help would be greatly appreciated!

Will.

When the following code enters "ajax_callback", it says that "data" is "null" !. But the server is a C ++ binary, which is confirmed by returning a JSON string {"h1":"newhash"}. Does anyone have an idea why jQuery seems unable to accept JSON data when calling ajax_callback?

Answer 1

, HTTP . :.

HTTP/1.0 200 OK
Content-Type: application/json
Content-Length: ...
...

{"h1":"bla"}

, printf("{\"h1\":\"bla\"}"); .

, , HEAD, GET, wget, curl nc. , Net Firebug ..

Answer 2

, $.POST(). , jquery $.post. ( "JSON" ), . , , , .

$.post('server.fcgi', {}, ajax_callback,{}, 'json');

-, JSON, $.parseJSON() .

, , URL- JSON, JSON .

.

$.post("url/path/here/to/json", {}, function(data){

    if(data){ // just in case the called program had a problem
         var obj =  $.parseJSON(data);
        .... do everything else using the Obj->         
    }
},{},"json");

.

JQuery, JSON,

$.getJSON();

url

.

$(document).ready(function(){

    $('.clickable').live('click', function() { 
             $.getJSON('server.fcgi', function(data){
                         window.location.hash = data.h1;
              });
         }
    );
});

Answer 3

, , , , jQuery 1.4.2? , 1.3.2, .: (