sample encapsulated variables, setters and getters

gistfile1.txt

function myfunc(){
  var data = {
    name:'',
    age:0,
    roles:[],
    prefs:{
      timezone:1,
      theme:'light',
      lng:'en'
    }
  };


  return {
    setName: function (arg){
      this.name = arg;
      return this.name;
    },
    setAge: function (arg){
      this.age = arg;
      return this.age;
    },
    getAsString: function () {
      return this.name+ " is " +this.age + " years old.";
    }
  }
}

var myvar = myfunc();