I am thinking about passing a private variable of one class into another class, for some belonging case like 'company --> department --> employee'. As an employee can tell some information of his company, there's some private variables I'd like to pass.I think this relationship is not as same as common class and supClass.  As an employee is not a type of department and a department is not a type of company (if I am wrong, please tell me more).So in a case like this, is it a good idea to use nested constructor functions?For example: http://jsfiddle.net/JsJJ9/function TeamClass(name){    var pass = privateVariable    var slot = 1;    this.members = []; // I have a list of members    this.name = name;    this.add = function(){ //add member into this team        var m = new MemberClass(slot++);        this.members.push(m)    }    function MemberClass(id){ //here comes the Nested class         var id = id;        this.report = function(){            alert('#'+id+' : Hello, i got some '+pass+'! ')            //So, this member can tell some private data of his team.        }    }}class01 = new TeamClass('Team A');class01.add();class01.add();class01.members[0].report();class01.members[1].report();Also, I have tried to let the nested class can call the upper level's public variable.  I have a function like this://at upper level class    m.setBelonging(this) and//at belonging class    var team = ''    this.setBelonging = function(theOdj){        team = theOdj;    }(or see it at http://jsfiddle.net/JsJJ9/1/)Any comment about this approach?Added at 2014-01-11 :Actually,  I am trying to ask how can I pass some variable that can't change outside the class (which in my understand, a private variable) to another class. And i found out may be i can do this by nested class. But I don't know is there any defects or there's some better approach.
Passing private variable in JavaScript nested class?
javascript;classes