FAQ: Intro to the Core Redux API - Implementing a React+Redux App

This community-built FAQ covers the “Implementing a React+Redux App” exercise from the lesson “Intro to the Core Redux API”.

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This exercise can be found in the following Codecademy content:

Learn Redux

FAQs on the exercise Implementing a React+Redux App

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I keep coming back to this lesson exercise. I have been trying to complete the exercise yet the ui seems to be stuck at instruction 3. I have tried different browsers, chrome, firefox and edge. I have also looked at the solution and the difference I see with instruction 3 is that instead of declaring a variable for state = props.state then embedding the state variable in the

of the render the solution simply puts props.state.

Has anyone else encountered this issue? I have also submitted this to Code Academy Support.

I have completed the task and the buttons do as they are supposed to. Maybe there is something in my code I am missing.

import React from 'react';
import ReactDOM from 'react-dom';
import { createStore } from 'redux';

// REDUX CODE
///////////////////////////////////

const increment = () => {
  return {type: 'increment'} 
}

const decrement = () => { 
  return {type: 'decrement'}
}

const initialState = 0;
const counterReducer = (state = initialState, action) => {
  switch (action.type) {
    case 'increment':
      return state + 1;
    case 'decrement':
      return state - 1;
    default:
      return state; 
  }
} 

const store = createStore(counterReducer);

// REACT CODE
///////////////////////////////////

const render = () => {
  ReactDOM.render(
    <CounterApp 
      state={store.getState()}
    />,
    document.getElementById('root')
  )
}
render();

// Render once with the initial state.
// Subscribe render to changes to the store's state.

function CounterApp(props) {
  const state = props.state;
  const onIncrementButtonClicked = () => {
    store.dispatch(increment());
  }
 
  const onDecrementButtonClicked = () => {
    // Dispatch an 'decrement' action.
    store.dispatch(decrement());
  }
  
  return (   d
    <div id='counter-app'>
      <h1> {state} </h1>
      <button onClick={onIncrementButtonClicked}>+</button> 
      <button onClick={onDecrementButtonClicked}>-</button>
    </div>
  )
}

store.subscribe(render);