Why can't cross-site ajax post request work in opera mini?

Question

JavaScript

There is a cross site ajax request that works everywhere except opara mini.

$.ajax({
              url: 'http://test.ru/test.php',
              type: 'POST',
              data: {
                data: 'test'
              },
              dataType: 'json',
              success: function(data) {
                alert(1);
              },
              error: function () {
                alert(2);
              }
            });

Why does the mini request fail in opera and the error function is called? I know that in it all client js is processed not by the browser but on the server, but it seems that ajax is supported in it.

Answer 1

in mini it turns out that cors is not supported =(

Answer 2

does opera mini work at all?