1 安装

npm install @reduxjs/toolkit

2 创建store目录

创建store文件夹，里面包含入口文件index.jsx，以及自定义的reduces方法main.jsx的slices文件夹，其中main1.jsx、main2.jsx表示每一个相对独立的reduces数据操作集
store
***slices
******main1.jsx
******main2.jsx
******...
***index.jsx

3 定义store结构

index.jsx（在项目入口处引入该文件）

import { configureStore } from '@reduxjs/toolkit'
import main1 from './slices/main1'
import main2 from './slices/main2'

export const store = configureStore({
  reducer: { main1, main2 }
})

export default store

main1.jsx（在页面中引入该文件）

import { createSlice, createAsyncThunk } from '@reduxjs/toolkit'

const initialState = {
  status: 10,
}

export const getRequestFn = createAsyncThunk( // 异步接口修改state
  'requestName',
  async () => {
    try {
      // 触发一个请求
      const { data } = await requestApi()
      return data
    } catch (err) {
      console.log('requestName', err)
    }
  }
)

const mainSlice = createSlice({
  name: 'main1',
  initialState,
  reducers: {
    increment(state, action) {
      state.status = state.status + action.payload
    },
    decrement(state, action) {
      state.status = state.status - action.payload
    },
    changeValue(state, action) {
      state.status = action.payload
    },
  },
  extraReducers(builder) {
    builder
      .addCase(getRequestFn.fulfilled, (state, actions) => {
        if (!actions.payload) return
        state.status = actions.payload.status // 赋值为请求的data.status
      })
  }
})

export const actions = mainSlice.actions

export default mainSlice.reducer

4 使用

在项目入口处引入store/index.jsx，
并在需使用store的组件中引入store/slices/main.jsx
项目中的具体使用如下：

import React, { memo } from 'react'
import { useSelector, useDispatch } from 'react-redux'
// 这里引入main1的地址，main1、main2按需引入
import { actions, getRequestFn } from '**/store/slices/main1'

function Home() {
    const { status } = useSelector(state => state.main)
    const dispatch = useDispatch()
    const handleAdd = () => {
        dispatch(actions.increment(1)) // status => 11
    }

    const handleAssign = () => {
        dispatch(actions.changeValue(100)) // status => 100
    }

    const handleRequest = () => {
        dispatch(getRequestFn()) // status => request data.status
    } 

    return <div>
        <div onClick={handleAdd}></div>
        <div onClick={handleAssign}></div>
        <div onClick={handleRequest}></div>
    </div>
}

export default Home

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