js 调用action返回值

// actions.js
export const addTodo = (text) => ({
  type: 'ADD_TODO',
  payload: text
});

// actions.js
import axios from 'axios';

export const fetchTodos = () => {
  return async (dispatch) => {
    dispatch({ type: 'FETCH_TODOS_REQUEST' });
    try {
      const response = await axios.get('/api/todos');
      dispatch({ type: 'FETCH_TODOS_SUCCESS', payload: response.data });
    } catch (error) {
      dispatch({ type: 'FETCH_TODOS_FAILURE', payload: error.message });
    }
  };
};

// reducer.js
const initialState = {
  todos: [],
  loading: false,
  error: null
};

function todosReducer(state = initialState, action) {
  switch (action.type) {
    case 'FETCH_TODOS_REQUEST':
      return { ...state, loading: true };
    case 'FETCH_TODOS_SUCCESS':
      return { ...state, loading: false, todos: action.payload };
    case 'FETCH_TODOS_FAILURE':
      return { ...state, loading: false, error: action.payload };
    default:
      return state;
  }
}

import { createStore, applyMiddleware } from 'redux';
import thunk from 'redux-thunk';
import rootReducer from './reducers';

const store = createStore(rootReducer, applyMiddleware(thunk));