02. Simple Subscriber

First things first, let's write a theoretical subscriber

var mySubscriber = function() {
    console.log('Something happened')
    // do something
}

Simple isn't it? It's still not registered anywhere but soon it will be. And when called, it will do what it was designed for (here just a console.log()).

mySubscriber()

So far here is the flow of our application

ActionCreator -> Action ... Subscriber

Next: About State and Meet Redux