actions redux code example

Example 1: redux action

import { createActions, handleActions, combineActions } from 'redux-actions';

const defaultState = { counter: 10 };

const { increment, decrement } = createActions({
  INCREMENT: (amount = 1) => ({ amount }),
  DECREMENT: (amount = 1) => ({ amount: -amount })
});

const reducer = handleActions({  
  [combineActions(increment, decrement)]: (state, action) => {
      return { ...state, counter: state.counter + action.payload.amount };
    }
  },
  defaultState
);

export default reducer;

Example 2: react native reducer example

import { combineReducers } from 'redux';

const INITIAL_STATE = {
  current: [],
  possible: [
    'Alice',
    'Bob',
    'Sammy',
  ],
};

const friendsReducer = (state = INITIAL_STATE, action) => {
  switch (action.type) {
    default:
      return state
  }
};

export default combineReducers({
  friends: friendsReducer
});

Example 3: redux acions

//npm i redux-actions or yarn add redux-actions

// single action creator
export const incAsyncCreator = createAction("INC");
export const decAsyncCreator = createAction("DEC");

// single action creator using - single reducer 
export const incReducer = handleAction(
  incAsyncCreator,
  (state, action) => ({
    ...state,
    counter: state.counter + 1,
    success: action.payload.success
  }),
  counterState
);

// single action creator using - single reducer 
export const decReducer = handleAction(
  incAsyncCreator,
  (state, action) => ({
    ...state,
    counter: state.counter + 1,
    success: action.payload.success
  }),
  counterState
);


//multiple action creator
export const { increment, decrement } = createActions({
  increment: (payload) => ({ ...payload }),
  decrement: (payload) => ({ ...payload })
});

// multiple action creator using - multiple reducer 
export const counterReducer = handleActions(
  {
    [increment]: (state, action) => ({
      ...state,
      counter: state.counter + 1,
      success: action.payload.success
    }),
    [decrement]: (state, action) => ({
      ...state,
      counter: state.counter - 1,
      success: action.payload.success
    })
  },
  counterState
);