React Store及store持久化的使用教程
作者:想不到耶
这篇文章主要介绍了React Store及store持久化的使用教程,本文给大家介绍的非常详细,对大家的学习或工作具有一定的参考借鉴价值,需要的朋友参考下吧
1.安装
npm insatll react-redux npm install @reduxjs/toolkit npm install redux-persist
2. 使用React Toolkit创建counterStore并配置持久化
store/modules/counterStore.ts:
import { createSlice } from '@reduxjs/toolkit' // 定义状态类型 interface Action { payload:number, type: string } interface State { count: number } export const counterStore = createSlice({ // 模块名称独一无二 name: 'counter', // 初始数据 initialState: { count: 1 }, // 修改数据的同步方法 reducers: { increment: (state:State) => { state.count += 1 }, decrement: (state:State) => { state.count -= 1 }, incrementNum: (state:State, action: Action) => { state.count += action.payload } } }) // 导出 export const { increment, decrement, incrementNum } = counterStore.actions export default counterStore.reducer
store/index.ts:
import { configureStore, combineReducers } from '@reduxjs/toolkit' import counterReducer from './modules/counterStore' import { persistStore, persistReducer } from 'redux-persist' // 选择持久化存储引擎,如 localStorage 或 AsyncStorage import storage from 'redux-persist/lib/storage' // 默认使用localStorage作为存储引擎 // 组合各个模块的reducer const reducer = combineReducers({ counter: counterReducer }) // 配置持久化设置 const persistConfig = { key: 'root', // 存储的键名 storage // 持久化存储引擎 // 可选的配置项,如白名单、黑名单等 选其一就好了 // blacklist:['test'], // 只有 test 不会被缓存 // whitelist: ["test"], // 只有 test 会被缓存 } const persistedReducer = persistReducer(persistConfig, reducer) export const store = configureStore({ reducer: persistedReducer, // 注册子模块 middleware: (getDefaultMiddleware) => getDefaultMiddleware({ serializableCheck: false // 关闭默认的序列化检查//关闭严格模式 }) }) export const persistor = persistStore(store)
3. 为React注入store
react-redux负责把Redux和React 链接 起来,内置 Provider组件,通过 store 参数把创建好的store实例注入到应用中,链接正式建立
main.tsx:
import ReactDOM from 'react-dom/client' import App from './App' import { BrowserRouter } from "react-router-dom" import { Provider } from 'react-redux' import {store, persistor } from "@/store" // store持久化 import { PersistGate } from 'redux-persist/integration/react' ReactDOM.createRoot(document.getElementById('root')!).render( <Provider store={store}> {/* 注入router实例 */} <BrowserRouter> <PersistGate loading={null} persistor={persistor}> <App /> </PersistGate> </BrowserRouter> </Provider> )
4. React组件使用store中的数据
useSelector,作用:在函数组件中获取redux数据存储对象中的某个数据
useDispatch,作用: 在函数组件中获取dipatch方法(用于发送action给reducer函数)
import React from "react"; import { useDispatch,useSelector } from "react-redux"; import { increment, decrement, incrementNum } from '@/store/modules/counterStore' const App: React.FC = () => { const dispatch = useDispatch() const { count } = useSelector((state:any) => state.counter) return ( <div> <div>{count}</div> <button onClick={() => {dispatch(increment())}}>加1</button> <button onClick={() => {dispatch(decrement())}}>减1</button> <button onClick={() => {dispatch(incrementNum(5))}}>加5</button> </div> ); }; export default App;
这样刷新之后数据就不会初始化了
到此这篇关于React Store及store持久化的使用的文章就介绍到这了,更多相关React Store使用内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!