Question

i have a working example which uses this url

http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=jQuery16201154390876987067_1314382298849&tags=cat&tagmode=any&format=json&_=1314382298856

which gives me this json result (this is the beginning of it:)

jQuery162031768042474373037_1314374838725({
        "title": "Recent Uploads tagged cat",
        "link": "http://www.flickr.com/photos/tags/cat/",

When i paste this in jslint, it says it is not valid json

now i have my own json service, which returns this:

{
    "one0": "file201101_01.jpg ",
    "one1": "file201101_02.jpg ",
    "one2": "file201101_03.jpg ",
    "one3": "file201101_04.jpg "
}

which is valid json according to jslint.

now the first (seems to be invalid) one is read by jquery.getJSON, but mine (which seems to be valid) isn’t.

when i look in firebug, it ‘says’ that no content is returnd from my service, but the url shown is returning content when i copy-paste it in the browser.

This is my code:

$.getJSON("http://jadieda.com/myservice.php",  
    {    year: "2011",
        id : "1"
    },
    function(data) 
    {    
        alert(data);

    });

the alert(data) doesn’t go off, so my guess was that the calling of the service did not return valid json (because of this from the help:As of jQuery 1.4, if the JSON file contains a syntax error, the request will usually fail silently)

Answer 1

That’s JSONP which is a way of getting cross domain AJAX.

I don’t know why your service isn’t returning data without seeing the PHP. But if the status code is 204, no content. Then chances are you are not echo/print any data;