Create a class with IIFE that isn't a reference?

Question

I\'m new to JavaScript and I\'m trying to wrap my head around creating \"classes\" with private data and public functions. I\'ve been told Immediately Invoked Function Expre

Answer 1

var Car = 
( function ( cardb ) {

  function Car ( color ) {

    // facing the same problem here
    // reinstaling .data() method for each created object
    // but this way each has its own data store object
    // and inner 1 to 1 circular reference js is able to deal with
    cardb( this );

    // set provided color parameter
    this.data("color", color);

  }

  return Car;

} )(

  // function to install .data() method to given object
  // it gets attached to object directly, instead of
  // attaching it to .prototype, in which case all
  // object will access same data store
  function ( obj ) {

    var _data = {};

    obj.data =
    function ( name, value ) {
      return arguments.length
       ? (
        ( value == null )
         ? _data[name]
         : (
           _data[name] = value,
           this
         )
       )
       : _data;
    };

    return obj;

  }
);

var c1 = new Car("red");
var c2 = new Car("blue");

c1.data("color");
// red

c2.data("color");
// blue

c1.data("color","white");

c2.data("color");
// blue
c1.data("color");
// white
//