A simplest redux example

simple_redux.js

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

const { createStore } = Redux;

#Store defined by passing a reducer
const store = createStore(counter);

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

store.subscribe(render);
render();

#the state is updated through the use of actions
document.addEventListener('click', () => {
  store.dispatch({ type: "INCREMENT" });
})