jepras

function addTogether() {
      // Function to check if a number is actually a number
      // and return undefined otherwise.
      var checkNum = function(num) {
        if (typeof num !== 'number') {
          return undefined;
        } else
          return num;
      };

jepras

function checkCashRegister(price, cash, cid) {
  var change = 0;
  var difference = cash - price;
  console.log(difference)

  // Create object with status & change key
  var cashreg = {
    status: "", 
    change: []
  }

jepras

const ADD = 'ADD';

const reducer = (state = 0, action) => {
  switch(action.type) {
    case ADD:
      return state + 1;
    default:
      return state;
  }
};

jepras

const ADD_NOTE = 'ADD_NOTE';

const notesReducer = (state = 'Initial State', action) => {
  switch(action.type) {
    // change code below this line
    case ADD_NOTE:
      return action.text
    // change code above this line
    default:
      return state;

jepras

const REQUESTING_DATA = 'REQUESTING_DATA'
const RECEIVED_DATA = 'RECEIVED_DATA'

const requestingData = () => { return {type: REQUESTING_DATA} }
const receivedData = (data) => { return {type: RECEIVED_DATA, users: data.users} }

const handleAsync = () => {
  return function(dispatch) {
    // dispatch request action here
    dispatch(requestingData());

jepras

const INCREMENT = 'INCREMENT'; // define a constant for increment action types
const DECREMENT = 'DECREMENT'; // define a constant for decrement action types

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

jepras

const immutableReducer = (state = [0,1,2,3,4,5], action) => {
  switch(action.type) {
    case 'REMOVE_ITEM':
      // don't mutate state here or the tests will fail
      return [
        ...state.slice(0, action.index),
        ...state.slice(action.index + 1, state.length)
      ]
    default:
      return state;

jepras

const defaultState = {
  user: 'CamperBot',
  status: 'offline',
  friends: '732,982',
  community: 'freeCodeCamp'
};

const immutableReducer = (state = defaultState, action) => {
  switch(action.type) {
    case 'ONLINE':

jepras

class DisplayMessages extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      input: '',
      messages: []
    }
    this.handleChange = this.handleChange.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
  };

jepras

// define ADD, addMessage(), messageReducer(), and store here:
const ADD = 'ADD';

const messageReducer = (state = [], action) => {
  switch(action.type) {
    case ADD:
      return [
          ...state,
          action.message
      ]