redux学习笔记之createSlice、createAsyncThunk

npm install redux-toolkit

1.数据流

afe24fa579e2470ba9465e852c17d090.png

上代码
2.Home/homeSlice.js

import { createAsyncThunk, createSlice } from '@reduxjs/toolkit';
import * as service from '../service'; // API

// 网络请求
export const getBasicInfo = createAsyncThunk(
  'home/getBasicInfo',
  (params, thunkAPI) => {
    console.log('dispatchParams', params);
    return  service.getBasicInfo();
  }
);

const homeSlice = createSlice({
  name: 'home',
  initialState: {
    value: 0,
    loading: 'idle',
    userPoints: {},
    quickEntrance: [],
    banner: [],
  },
  reducers: {
    increment(state) {
      state.value++;
    },
    decrement(state) {
      state.value--;
    },
    setValue(state, {payload}) {
    state.value = payload
  },
  extraReducers: builder => {
    builder.addCase(getBasicInfo.pending, (state, action) => {
      state.loading = 'pending';
    });
    // 接口请求返回
    builder.addCase(getBasicInfo.fulfilled, (state, { payload }) => {
      state.loading = 'fulfilled';
      // 这里处理数据
      state.userPoints = payload.userPoints;
      state.banner = payload.banner;
      state.quickEntrance = payload.quickEntrance;
    });
    builder.addCase(getBasicInfo.rejected, (state, action) => {
      state.loading = 'failure';
    });
  },
});

// actions
export const { increment, decrement, setValue } = homeSlice.actions;

// reducers
export default homeSlice.reducer;

3.store/index.js

//  辅助函数
import { configureStore, combineReducers } from '@reduxjs/toolkit';
import homeSlice from '../Home/homeSlice';

const reducer = combineReducers({
  home: homeSlice,
});

const store = configureStore({
  reducer,
});

export default store;

4.组件Home/home.jsx

import React from 'react';
import { useSelector, useDispatch } from 'react-redux';
import { getBasicInfo, setValue } from './homeSlice';


export default function Home() {
  const { value, loading, userPoints, quickEntrance, banner }= useSelector(state => state.home);
  const dispatch = useDispatch();

  // 防抖
  const getBasicInfo = () => {
      dispatch(getBasicInfo({ userinfo: 1234567 }));
       dispatch(setValue(2));
  };

  console.log(value);
  return (
    <div>{value}</div>
  );
}

5.出口index.js

import React from 'react';
import ReactDOM from 'react-dom';
// 跨组件状态共享
import { Provider } from 'react-redux';
import BasicRoute from './router';
import store from './store';
import './assets/style/index.less';
// ios scrollTo平滑移动兼容
import smoothscroll from 'smoothscroll-polyfill';
smoothscroll.polyfill();
import '@/styles/base.less';
import 'zarm/dist/zarm.css';

ReactDOM.render(
  <>
    <Provider store={store}>
      <BasicRoute />
    </Provider>
  </>,
  document.querySelector('#app')
);