text: ﻿callWorld : function () {
      var xhr = $.ajax('/some/url')
          .done(function(responseText) { 
              console.log( responseText ); 
          })
            .fail(function() { 
                console.log( "error" ); 
            })
            .always(function() { 
                console.log( "complete" ); 
            });
  }