text: 
  function Super(name) {
    var _name = name;
    this._sayMyName = function () {
      return _name;
    }
  }
  
  Super.prototype.sayMyName = function () {
    console.log(this._sayMyName());
  };
  
  function Suber(name){
    Super.call(this, name);
  }
  
  Suber.prototype = new Super();
  
  Suber.prototype.constructor = Suber;
  
  var obj = new Suber('I\'m Suber', 'I\'m Super');
  
  obj.sayMyName();
  