Use of $.getJSON() in cocoonjs

Question

I have a HTML5 game working perfectly in desktop and for the leadersboards (and for more stuff) I use ajax to send parameters and receive data.

The fact is that everything is working fine but in cocoon, in cocoonjs is not working at all and I don´t know why, jQuery is supported and in theory everything should be fine. Does anyone know why is not working this code?

Thanks in advance.

$.ajax({
 type: 'GET',
 url: this.baseURL+'/getScores.php',
 data: { 
      'theGame': '1', 
      'theOrder': 'ASC'
 },
 fail: function(msg){
      alert(msg);
 }
 });

And I´m also trying this code (not working in cocoonjs)

$.getJSON( STK.root.urlBase+"/getScores.php",
 { theGame: "1", theOrder: "ASC" }
)
 .done(function(data) {
      //DO STUFF
 })
 .fail(function( jqxhr, textStatus, error ) {
     console.log( "Request failed: " + err );
 });

Answer 1

Well, everything was a CORS thing, I fixed it with this header in the php files that receive/send data:

header("Access-Control-Allow-Origin: *");