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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <button class="incButton">Increment</button>
<button class="decButton">Decrement</button>
<button class="decaIncButton">Increment by 10 in 3 seconds</button>

              class ZeroFux {
  constructor(element) {
    if (element) {
      this.dispatcher = element;
    } else {
      this.dispatcher = document.querySelector('body');

  // The dipatch method takes an action argument
  // of the previously defined action type.
  dispatch(action) {
		  new CustomEvent(action.type, {
		    detail: action,
		    // In case you set a custom dispatcher element
		    // and want them to bubble.
		    bubbles: true,
		    // In case your custom dispatcher is in the
		    // Shadow DOM and you want them to bubble between
		    // the borders or Shadow DOM and regular DOM.
		    compose: true,

  // This method takes an array of action types
  // that can influence a component's state,
  // an object with reducers with the same names
	// as the action types and a reference
	// to the component on which we want to set
	// the state propery.
  setReducers(actionTypes, reducers, component) {
		actionTypes.forEach(actionType => {
			if (reducers[actionType]) {
				this.dispatcher.addEventListener(actionType, e => {
					const action = e.detail;
					component.state = reducers[actionType](component.state, action);
			} else {
				throw new Error(
					`Please add a reducer for the "${actionType}" action.`

const zeroFux = new ZeroFux();

const actionTypes = ['INCREMENT', 'DECREMENT', 'INCREMENT_X'];

const reducers = {
  'INCREMENT': (state, action) => parseInt(state) + 1,
  'DECREMENT': (state, action) => parseInt(state) - 1,
  'INCREMENT_X': (state, action) => parseInt(state) + action.payload,

// Update the counter with ZeroFux:
class Counter extends HTMLElement {
  constructor() {
    this.attachShadow({ mode: 'open' });
    this.state = 0;

  get state() {
    return this._state;

  set state(s) {
		this._state = s;

  connectedCallback() {
    zeroFux.setReducers(actionTypes, reducers, this);

  render() {
    const counterText = document.createTextNode(this.state);
    this.shadowRoot.innerHTML = '';

window.customElements.define('my-counter', Counter);

class SideEffects {
  run() {
    zeroFux.dispatcher.addEventListener('ADD_TEN_IN_THREE', () => {
      window.setTimeout(() => zeroFux.dispatch({
        type: 'INCREMENT_X',
        payload: 10
      }), 3000);

const sideEffects = new SideEffects();

const incButton = document.querySelector('.incButton');
const decButton = document.querySelector('.decButton');
const decaIncButton = document.querySelector('.decaIncButton');

incButton.addEventListener('click', e => zeroFux.dispatch({ type: 'INCREMENT' }));
decButton.addEventListener('click', e => zeroFux.dispatch({ type: 'DECREMENT' }));
decaIncButton.addEventListener('click', e => zeroFux.dispatch({ type: 'ADD_TEN_IN_THREE' }));

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