Question

I’m currently working on cross domain data transfer and I’ve hit a really big block, I’ve spent hours & hours trying to get this to work, it seems to be the correct way of doing it so any pointers would be greatly received.

I’m using jquery & the getJSON to return a id from a php page that json_encodes the data;

My jquery code is `

 $.getJSON("http://www.icetrack.it/scripts/php/data/ipAddress.php",

    {    
        location: locationVar,
        user_key: user_key,
        refer: refer,
        title: title,   
        async:false,        
        dataType: 'json',
        success: function(data) {

             alert(data);
        }
                 },"json"); 

which talks to a php page that outputs nothing other than,

echo json_encode(array("id"=>"$id")); ?>

This page outputs JSON as such

{"id":"198"} 

Yet all my jquery will return is a undefined variable, where am I going wrong this is driving mad!

Thanks all!

Answer 1

You’re passing the wrong parameters to $.getJSON() – many of the ones you’ve supplied only work for $.ajax().

In particular, the data parameter for $.getJSON() is for CGI parameters to be sent to the server, not for arbirtrary $.ajax() parameters.

Try this:

$.ajax({
     url: "http://www.icetrack.it/scripts/php/data/ipAddress.php",
     data: {    
        location: locationVar,
        user_key: user_key,
        refer: refer,
        title: title
     },
     async:false,        
     dataType: 'json',
     success: function(data) {
         alert(data);
     }
 });