ajax call to controller function outside root

hi all

my application folder sits about the root
how can i call a controller function from ajax ?

Code:

$('#editabout').click(function() {
  
          

  $.ajax({
    type: 'get',
    url: '../application/controllers/auth_public/editabout',
    dataType: 'html',
    success: function (html) {
    
      $('#testdiv').html(html);
    }
  });
});

thanks