Write a Counter with Redux - Error with decremention

JavaScript
#1

Tell us what’s happening:

Error “Dispatching decAction on the Redux store should decrement the state by 1.”.
The problem seems stupid, but I can not understand, what is wrong with the code and why decremention does not work.

Your code so far


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

const counterReducer = (state=0, action) =>{
  switch (action.type) {
    case INCREMENT:
      return state+1;
      break;
    case DECREMENT:
      return state-1;
      break;
    default:
      return state;
      break
  };  
}; // define the counter reducer which will increment or decrement the state based on the action it receives

const incAction = () => {return {type: INCREMENT}}; // define an action creator for incrementing

const decAction = () => {return {type: DECREMENT}}; // define an action creator for decrementing

const store = Redux.createStore(counterReducer); // define the Redux store here, passing in your reducers

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0.

Link to the challenge:

#2

The problem is these 2 lines

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

You have yet to define a value for them, it should be like this: const INCREMENT = "INCREMENT" as well as the decrement.

1 Like
#3