1.安装包

npm install @reduxjs/toolkit react-redux -S

2.看看目录结构

3.store的user代码

import { createSlice } from "@reduxjs/toolkit";

// 初始状态
let initialState = {
  count: 1,
  users: [
    {
      name: "zhangzhang",
      pass: "123456",
    },
  ],
  infor: {
    infor_num: 20,
    infor_type: "cosplay",
    infor_name: "GAT5",
  },
};

// 改变状态的方法
let reducers = {
  changeCount(state, { payload }) {
    state.count = payload;
  },
};

// 创建为小仓库
const stateSlice = createSlice({
  name: "user",
  initialState,
  reducers,
});

// 导出改变状态的方法
export const { changeCount } = stateSlice.actions;
// 导出当前整体仓库
export default stateSlice.reducer;

4.store的index代码

 

// 导入创建库的钩子
import { configureStore } from "@reduxjs/toolkit";

// 引入小仓库
import user from "./user";

// 合为一个大仓库
const store = configureStore({
  // 每个reducer代表一个模块的状态管理器
  reducer: {
    user,
  },
});

export default store;

使用

挂到indexjs上

import React from "react";
import ReactDOM from "react-dom/client";
import "./index.css";
import App from "./App";
import reportWebVitals from "./reportWebVitals";
import { BrowserRouter } from "react-router-dom";
import { Provider } from "react-redux";
import store from "./store";

const root = ReactDOM.createRoot(document.getElementById("root"));
root.render(
  // BrowserRouter 是history模式
  <BrowserRouter>
    {/* // Provider主要配合redux，进行store数据的传递 */}
    <Provider store={store}>
      <App />
    </Provider>
  </BrowserRouter>
);


reportWebVitals();

在代码里面进行取值使用方法，pages

// 使用方法的话，用从具体的库引用出来
import { changeCount } from "../../store/user"
// useDispatch是进行方法的使用，useSelector是进行取值
import { useDispatch,useSelector } from "react-redux"

export default function Home() {
    const dispatch = useDispatch();
    let selector = useSelector(store => store.user.count);
    console.log(selector, '==')
    // dispatch(changeCount(2))
    return (
        <div>hello word</div>
    )
}