Frage zur Notation non JavaScripten

[unknown]

var Common = (function() {
   function nurInnerhalbDerKapselFuncErrichbar(){

}
   var Domhelper = {
     toggleButton: function() {
       nurInnerhalbDerKapselFuncErrichbar();
     }
   };

var Ajax = {
     getXYData: function() {
     }
   };

return {
     Domhelper: Domhelper,
     Ajax: Ajax
   };
})();

sonst

var Common = {};

(function(parent) {
   function nurFürDomhelperErrichbar(){

}
   parent.Domhelper = {
     toggleButton: function() {
       nurInnerhalbDerKapselFuncErrichbar();
     }
   };
})(Common);

(function(parent) {
   parent.Ajax = {
     getXYData: function() {
     }
   };
})(Common);