JS Bin// source http://jsbin.com/cequnu

Redux 6: Store methods: getState(),dispatch() and subscribe() final

const counter = (state = 0, action) => {
  switch (action.type) {
    case 'INCREMENT':
      return state + 1;
    case 'DECREMENT':
      return state - 1;
    default:
      return state;
  }
}

const { createStore} = Redux;
const store = createStore(counter);

const render = () => {
  document.body.innerText = store.getState();
}
// Needed to show initial state 0
store.subscribe(render);
// Needed to show initial state 0
render();

document.addEventListener('click', () => {
  store.dispatch({type:'INCREMENT'});
});

Redux: Store methods: getState(),dispatch() and subscribe() step 1

'use strict';

var counter = function counter(state, action) {
  if (state === undefined) state = 0;

  switch (action.type) {
    case 'INCREMENT':
      return state + 1;
    case 'DECREMENT':
      return state - 1;
    default:
      return state;
  }
};

var _Redux = Redux;
var createStore = _Redux.createStore;

var store = createStore(counter);

console.log(store.getState());
store.dispatch({ type: 'INCREMENT' });
console.log(store.getState());

Redux: Store methods: getState(),dispatch() and subscribe() step 2

const counter = (state = 0, action) => {
  switch (action.type) {
    case 'INCREMENT':
      return state + 1;
    case 'DECREMENT':
      return state - 1;
    default:
      return state;
  }
}

const { createStore} = Redux;
const store = createStore(counter);

store.subscribe(() => {
  document.body.innerText = store.getState();
});

document.addEventListener('click', () => {
  store.dispatch({type:'INCREMENT'});
});