{"id":37369,"date":"2025-05-15T22:28:02","date_gmt":"2025-05-15T14:28:02","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/37369.html"},"modified":"2025-05-15T22:28:02","modified_gmt":"2025-05-15T14:28:02","slug":"%e3%80%90%e9%9d%a2%e8%af%95-%c2%b7-%e4%b8%89%e3%80%91react%e5%a4%a7%e9%9b%86%e5%90%88%ef%bc%88%e7%b1%bb%e5%bc%8f-%e5%87%bd%e6%95%b0%e5%bc%8f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/37369.html","title":{"rendered":"\u3010\u9762\u8bd5 \u00b7 \u4e09\u3011react\u5927\u96c6\u5408\uff08\u7c7b\u5f0f\/\u51fd\u6570\u5f0f\uff09"},"content":{"rendered":"

\u76ee\u5f55<\/p>\n

\u7c7b\u5f0f\u7ec4\u4ef6\u751f\u547d\u5468\u671f<\/p>\n

\u51fd\u6570\u5f0f\u7ec4\u4ef6hook<\/p>\n

\u7ec4\u4ef6\u901a\u4fe1<\/p>\n

\u7c7b\u7ec4\u4ef6\u548c\u51fd\u6570\u7ec4\u4ef6\u7684\u533a\u522b<\/p>\n

\u5168\u5c40\u72b6\u6001\u7ba1\u7406react-redux<\/p>\n

\u8def\u7531<\/p>\n

\u53d7\u63a7\u7ec4\u4ef6\u548c\u975e\u53d7\u63a7\u7ec4\u4ef6<\/p>\n

\u9ad8\u9636\u7ec4\u4ef6<\/p>\n

Fiber<\/p>\n

\u7c7b\u5f0f\u7ec4\u4ef6\u751f\u547d\u5468\u671f<\/h2>\n

constructor<\/span><\/p>\n

\u521d\u59cb\u5316\u7ec4\u4ef6\u7684\u72b6\u6001\u548c\u7ed1\u5b9a\u4e8b\u4ef6\u5904\u7406\u5668\u3002<\/p>\n

constructor(props) {
\n super(props);
\n this.state = { count: 0 };
\n this.handleClick = this.handleClick.bind(this); \/\/ \u7ed1\u5b9a\u4e8b\u4ef6\u5904\u7406\u5668
\n} <\/p>\n

getDerivedStateFromProps<\/span><\/p>\n

\u7528\u4e8e\u5728\u6302\u8f7d\u548c\u66f4\u65b0\u524d\u6839\u636e props \u66f4\u65b0 state\u3002<\/p>\n

static getDerivedStateFromProps(nextProps, prevState) {
\n if (nextProps.value !== prevState.value) {
\n return { value: nextProps.value };
\n }
\n return null;
\n} <\/p>\n

render<\/span><\/p>\n

\u5fc5\u987b\u5b9e\u73b0\u7684\u65b9\u6cd5，\u6e32\u67d3\u7ec4\u4ef6\u7684\u865a\u62df DOM\u3002<\/p>\n

componentDidMount<\/span><\/p>\n

\u7ec4\u4ef6\u6302\u8f7d\u5b8c\u6210\u540e\u8c03\u7528，\u901a\u5e38\u7528\u4e8e\u53d1\u8d77\u7f51\u7edc\u8bf7\u6c42\u3001\u8ba2\u9605\u4e8b\u4ef6\u7b49\u526f\u4f5c\u7528\u64cd\u4f5c\u3002<\/p>\n

componentDidMount() {
\n fetch('\/api\/data').then(response => this.setState({ data: response.data }));
\n} <\/p>\n

shouldComponentUpdate<\/span><\/p>\n

\u5224\u65ad\u7ec4\u4ef6\u662f\u5426\u9700\u8981\u91cd\u65b0\u6e32\u67d3\u3002\u8fd4\u56de\u00a0false\u00a0\u53ef\u4ee5\u963b\u6b62\u4e0d\u5fc5\u8981\u7684\u91cd\u65b0\u6e32\u67d3\u3002<\/p>\n

shouldComponentUpdate(nextProps, nextState) {
\n return nextState.count !== this.state.count;
\n} <\/p>\n

getSnapshotBeforeUpdate<\/span><\/p>\n

\u5728\u6700\u65b0\u7684\u6e32\u67d3\u8f93\u51fa\u63d0\u4ea4\u7ed9 DOM \u4e4b\u524d\u8c03\u7528，\u53ef\u4ee5\u6355\u83b7\u4e00\u4e9b DOM \u4fe1\u606f（\u5982\u6eda\u52a8\u4f4d\u7f6e），\u4ee5\u4fbf\u5728\u00a0componentDidUpdate\u00a0\u4e2d\u4f7f\u7528\u3002<\/p>\n

getSnapshotBeforeUpdate(prevProps, prevState) {
\n if (prevProps.items.length < this.props.items.length) {
\n return this.listRef.scrollHeight;
\n }
\n return null;
\n} <\/p>\n

componentDidUpdate<\/span><\/p>\n

\u7ec4\u4ef6\u66f4\u65b0\u5b8c\u6210\u540e\u8c03\u7528，\u53ef\u4ee5\u5728\u6b64\u8fdb\u884c\u526f\u4f5c\u7528\u64cd\u4f5c（\u5982\u7f51\u7edc\u8bf7\u6c42\u3001DOM \u64cd\u4f5c\u7b49）<\/p>\n

\u53ef\u4ee5\u8c03\u7528 setState()，\u4f46\u5fc5\u987b\u5305\u88f9\u5728\u6761\u4ef6\u8bed\u53e5\u4e2d，\u5426\u5219\u4f1a\u5bfc\u81f4\u65e0\u9650\u5faa\u73af<\/p>\n

componentDidUpdate(prevProps, prevState, snapshot) {<\/p>\n

} <\/p>\n

componentWillUnmount<\/span><\/p>\n

\u7ec4\u4ef6\u5378\u8f7d\u548c\u9500\u6bc1\u4e4b\u524d\u8c03\u7528，\u901a\u5e38\u7528\u4e8e\u6e05\u7406\u5de5\u4f5c，\u5982\u53d6\u6d88\u8bf7\u6c42\u3001\u6e05\u9664\u5b9a\u65f6\u5668\u3001\u79fb\u9664\u76d1\u542c\u5668\u7b49\u3002<\/p>\n

componentWillUnmount() {
\n clearInterval(this.timerID);
\n this.subscription.remove();
\n} <\/p>\n

\u9519\u8bef\u8fb9\u754c<\/span><\/p>\n

static getDerivedStateFromError(error) {
\n \/\/ \u66f4\u65b0 state \u4ee5\u89e6\u53d1\u5907\u7528 UI \u7684\u6e32\u67d3
\n return { hasError: true };
\n } <\/p>\n

componentDidCatch(error, errorInfo) {
\n \/\/ \u4f60\u53ef\u4ee5\u5c06\u9519\u8bef\u65e5\u5fd7\u4e0a\u62a5\u7ed9\u670d\u52a1\u5668
\n console.error("Uncaught error:", error, errorInfo);
\n } <\/p>\n

\u51fd\u6570\u5f0f\u7ec4\u4ef6hook<\/h2>\n

useState<\/span><\/p>\n

\u72b6\u6001\u7ba1\u7406\u00a0\u00a0\u8fd4\u56de\u4e00\u4e2a\u72b6\u6001\u503c\u548c\u66f4\u65b0\u51fd\u6570<\/p>\n

import React,{ useState } from 'react'
\nconst [xxx, setXxx] = useState( ) <\/p>\n

useEffect<\/span><\/p>\n<\/p>\n

\u7ec4\u5408\u4e86 componentDidMount, componentDidUpdate \u548c componentWillUnmount\u00a0<\/p>\n

useEffect(() => {
\n \u5728return\u4e0a\u9762\u53ef\u4ee5\u6267\u884c\u4efb\u4f55\u5e26\u526f\u4f5c\u7528\u64cd\u4f5c
\n return () => { \u5728\u7ec4\u4ef6\u5378\u8f7d\u524d\u6267\u884c
\n \u5728\u6b64\u505a\u4e00\u4e9b\u6536\u5c3e\u5de5\u4f5c, \u6bd4\u5982\u6e05\u9664\u5b9a\u65f6\u5668\/\u53d6\u6d88\u8ba2\u9605\u7b49
\n }
\n}, [stateValue]) \u5982\u679c\u6307\u5b9a\u7684\u662f[], \u56de\u8c03\u51fd\u6570\u53ea\u4f1a\u5728\u7b2c\u4e00\u6b21render()\u540e\u6267\u884c <\/p>\n

useLayoutEffect<\/span><\/p>\n

\u7528\u4e8e\u5728\u6d4f\u89c8\u5668\u91cd\u65b0\u7ed8\u5236\u5c4f\u5e55\u4e4b\u524d\u89e6\u53d1<\/p>\n

\"\"<\/p>\n

useContext<\/span><\/p>\n

\u8ba2\u9605React\u4e0a\u4e0b\u6587<\/p>\n

const value = useContext(MyContext);
\n\/\/ 1. \u521b\u5efa\u4e0a\u4e0b\u6587
\nconst ThemeContext = createContext('light');<\/p>\n

\/\/ 2. \u63d0\u4f9b\u4e0a\u4e0b\u6587
\nconst App = () => (
\n <ThemeContext.Provider value="dark">
\n <Child \/>
\n <\/ThemeContext.Provider>
\n);<\/p>\n

\/\/ 3. \u4f7f\u7528\u4e0a\u4e0b\u6587
\nconst Child = () => {
\n const theme = useContext(ThemeContext);
\n return <div>Theme: {theme}<\/div>;
\n}; <\/p>\n

useRef<\/span><\/p>\n

\u5728\u51fd\u6570\u7ec4\u4ef6\u4e2d\u5b58\u50a8\/\u67e5\u627e\u7ec4\u4ef6\u5185\u7684\u6807\u7b7e\u6216\u4efb\u610f\u5176\u5b83\u6570\u636e<\/p>\n

const myRef = React.useRef()<\/p>\n

function show(){
\n alert(myRef.current.value)
\n}<\/p>\n

<input type="text" ref={myRef}\/>
\n<button onClick={show}>\u70b9\u6211\u63d0\u793a\u6570\u636e<\/button> <\/p>\n

useMemo \u548c useCallback<\/span><\/p>\n

\u76f8\u5f53\u4e8e shouldComponentUpdate \u7684\u4f18\u5316，\u7528\u4e8e\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97\u548c\u6e32\u67d3<\/p>\n

useMemo \u548c useCallback<\/p>\n

useReducer<\/span><\/p>\n

useReducer (redux)<\/p>\n<\/p>\n

useReducer \u662f React Hooks \u4e2d\u7684\u4e00\u4e2a\u51fd\u6570，\u7528\u4e8e\u7ba1\u7406\u548c\u66f4\u65b0\u7ec4\u4ef6\u7684\u72b6\u6001\u3002\u5b83\u53ef\u4ee5\u88ab\u89c6\u4e3a useState \u7684\u4e00\u79cd\u66ff\u4ee3\u65b9\u6848，\u9002\u7528\u4e8e\u5904\u7406\u66f4\u590d\u6742\u7684\u72b6\u6001\u903b\u8f91\u3002<\/p>\n

\u76f8\u6bd4\u4e8e useState，useReducer \u5728\u5904\u7406\u590d\u6742\u72b6\u6001\u903b\u8f91\u65f6\u66f4\u6709\u4f18\u52bf，\u56e0\u4e3a\u5b83\u5141\u8bb8\u6211\u4eec\u5c06\u72b6\u6001\u66f4\u65b0\u7684\u903b\u8f91\u5c01\u88c5\u5728 reducer \u51fd\u6570\u4e2d，\u5e76\u6839\u636e\u4e0d\u540c\u7684\u52a8\u4f5c\u7c7b\u578b\u6267\u884c\u76f8\u5e94\u7684\u903b\u8f91\u3002\u8fd9\u6837\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u5177\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027，\u5e76\u4e14\u66f4\u5bb9\u6613\u8fdb\u884c\u72b6\u6001\u8ffd\u8e2a\u548c\u8c03\u8bd5\u3002<\/p>\n

import { useReducer } from 'react';<\/p>\n

const initialState = {
\n count: 0,
\n};<\/p>\n

const reducer = (state, action) => {
\n switch (action.type) {
\n case 'increment':
\n return { count: state.count + 1 };
\n case 'decrement':
\n return { count: state.count – 1 };
\n default:
\n throw new Error('Unsupported action type');
\n }
\n};<\/p>\n

function Counter() {
\n const [state, dispatch] = useReducer(reducer, initialState);<\/p>\n

const increment = () => {
\n dispatch({ type: 'increment' });
\n };<\/p>\n

const decrement = () => {
\n dispatch({ type: 'decrement' });
\n };<\/p>\n

return (
\n <div>
\n <p>Count: {state.count}<\/p>
\n <button onClick={increment}>Increment<\/button>
\n <button onClick={decrement}>Decrement<\/button>
\n <\/div>
\n );
\n}<\/p>\n

\"\"<\/p>\n

\u7ec4\u4ef6\u901a\u4fe1<\/h2>\n

\u7236\u4f20\u5b50<\/p>\n

\/\/\u7c7b\u5f0f\u7ec4\u4ef6\u2014\u2014\u2014\u2014\u7236
\nimport React, { Component } from 'react'
\nimport Son from '.\/Son'<\/p>\n

export default class Parent extends Component {
\n state = {
\n info: '\u6211\u662f\u7236\u7ec4\u4ef6\u8981\u4f20\u7ed9\u5b50\u7ec4\u4ef6\u7684\u6570\u636e！'
\n }
\n render() {
\n const { info } = this.state
\n return (
\n <div >
\n <h2>\u4f60\u597d，\u6211\u662fParent\u7ec4\u4ef6！<\/h2>
\n {\/* \u7236\u7ec4\u4ef6\u901a\u8fc7\u5728\u5b50\u6807\u7b7e\u4e2d\u6dfb\u52a0 \u5c5e\u6027=\u503c \u5c06\u6570\u636e\u4f20\u9012\u7ed9\u5b50\u7ec4\u4ef6 *\/}
\n <Son info={info} \/>
\n <\/div>
\n )
\n }
\n}<\/p>\n

\/\/\u5b50
\nimport React, { Component } from 'react'<\/p>\n

export default class Son extends Component {
\n render() {
\n const { info } = this.props
\n return (
\n <div >
\n <h2>\u4f60\u597d，\u6211\u662fSon\u7ec4\u4ef6！<\/h2>
\n <h3>\u6211\u63a5\u53d7\u5230\u7236\u7ec4\u4ef6\u4f20\u9012\u8fc7\u6765\u7684\u6570\u636e\u662f：{info}<\/h3>
\n <\/div>
\n )
\n }
\n}<\/p>\n

\/\/\u51fd\u6570\u5f0f\u7ec4\u4ef6\u2014\u2014\u2014\u2014\u7236
\nimport React from 'react'
\nimport Son from '.\/Son'<\/p>\n

export default function Parent() {
\n const info = '\u6211\u662f\u7236\u7ec4\u4ef6\u8981\u4f20\u7ed9\u5b50\u7ec4\u4ef6\u7684\u6570\u636e！'
\n return (
\n <div className='parent'>
\n <h2>\u4f60\u597d，\u6211\u662fParent\u7ec4\u4ef6！<\/h2>
\n {\/* \u7236\u7ec4\u4ef6\u901a\u8fc7\u5728\u5b50\u6807\u7b7e\u4e2d\u6dfb\u52a0 \u5c5e\u6027=\u503c \u5c06\u6570\u636e\u4f20\u9012\u7ed9\u5b50\u7ec4\u4ef6 *\/}
\n <Son info={info} \/>
\n <\/div>
\n )
\n}<\/p>\n

\/\/\u5b50
\nimport React from 'react'<\/p>\n

export default function Son(props) {
\n const {info} = props
\n return (
\n <div >
\n <h2>\u4f60\u597d，\u6211\u662fSon\u7ec4\u4ef6！<\/h2>
\n <h3>\u6211\u63a5\u53d7\u5230\u7236\u7ec4\u4ef6\u4f20\u9012\u8fc7\u6765\u7684\u6570\u636e\u662f：{info}<\/h3>
\n <\/div>
\n )
\n}<\/p>\n

\u5b50\u4f20\u7236<\/p>\n

\/\/\u7c7b\u5f0f\u7ec4\u4ef6\u2014\u2014\u2014\u2014\u7236
\nimport React, { Component } from 'react'
\nimport Son from '.\/Son'
\nimport '.\/index.css'<\/p>\n

export default class Parent extends Component {
\n state = {
\n info: '\u6211\u662f\u7236\u7ec4\u4ef6\u8981\u4f20\u7ed9\u5b50\u7ec4\u4ef6\u7684\u6570\u636e！'
\n }
\n changeInfo = (info) => {
\n this.setState({ info })
\n }
\n render() {
\n const { info } = this.state
\n return (
\n <div className='parent'>
\n <h2>\u4f60\u597d，\u6211\u662fParent\u7ec4\u4ef6！<\/h2>
\n {\/* \u7236\u7ec4\u4ef6\u7ed9\u5b50\u7ec4\u4ef6\u7ed1\u5b9a\u4e00\u4e2a\u56de\u8c03\u51fd\u6570changeInfo *\/}
\n <Son changeInfo={info => { this.changeInfo(info) }} \/>
\n <h3>info\u4fe1\u606f\u662f：{info}<\/h3>
\n <\/div>
\n )
\n }
\n}<\/p>\n

\/\/\u5b50
\nimport React, { Component } from 'react'<\/p>\n

export default class Son extends Component {
\n btnClick = () => {
\n const info2 = '\u6211\u662f\u5b50\u7ec4\u4ef6\u6539\u53d8\u4e4b\u540e\u4f20\u7ed9\u7236\u7ec4\u4ef6\u7684\u6570\u636e！'
\n this.props.changeInfo(info2 )
\n }
\n render() {<\/p>\n

return (
\n <div className='son'>
\n <h2>\u4f60\u597d，\u6211\u662fSon\u7ec4\u4ef6！<\/h2>
\n <button onClick={() => this.btnClick()}>\u70b9\u51fb\u6539\u53d8\u7236\u7ec4\u4ef6\u5c55\u793a\u7684info<\/button>
\n <\/div>
\n )
\n }
\n}<\/p>\n

\/\/\u51fd\u6570\u5f0f\u7ec4\u4ef6\u2014\u2014\u2014\u2014\u7236
\nimport React, { useState } from 'react'
\nimport Son from '.\/Son'
\nimport '.\/index.css'<\/p>\n

export default function Parent() {
\n const [info, setInfo] = useState('\u6211\u662f\u7236\u7ec4\u4ef6\u8981\u4f20\u7ed9\u5b50\u7ec4\u4ef6\u7684\u6570\u636e！')
\n function changeInfo(info) {
\n setInfo(info)
\n }
\n return (
\n <div className='parent'>
\n <h2>\u4f60\u597d，\u6211\u662fParent\u7ec4\u4ef6！<\/h2>
\n {\/* \u7236\u7ec4\u4ef6\u7ed9\u5b50\u7ec4\u4ef6\u7ed1\u5b9a\u4e00\u4e2a\u56de\u8c03\u51fd\u6570changeInfo *\/}
\n <Son changeInfo={info => changeInfo(info)} \/>
\n <h3>info\u4fe1\u606f\u662f：{info}<\/h3>
\n <\/div>
\n )
\n}<\/p>\n

\/\/\u5b50
\nimport React from 'react'<\/p>\n

export default function Son(props) {
\n function btnClick() {
\n const info2 = '\u6211\u662f\u5b50\u7ec4\u4ef6\u6539\u53d8\u4e4b\u540e\u4f20\u7ed9\u7236\u7ec4\u4ef6\u7684\u6570\u636e！'
\n props.changeInfo(info2)
\n }
\n return (
\n <div className='son'>
\n <h2>\u4f60\u597d，\u6211\u662fSon\u7ec4\u4ef6！<\/h2>
\n <button onClick={btnClick}>\u70b9\u51fb\u6539\u53d8\u7236\u7ec4\u4ef6\u5c55\u793a\u7684info<\/button>
\n <\/div>
\n )
\n}<\/p>\n

\u975e\u7236\u5b50\u901a\u4fe1 context<\/p>\n

\/\/\u7c7b\u5f0f\u7ec4\u4ef6\u2014\u2014\u2014\u2014\u7956\u7ec4\u4ef6
\nimport React, { Component } from 'react'
\nimport Parent from '.\/Parent'
\nimport '.\/index.css'<\/p>\n

\/\/ \u521b\u5efa\u5e76\u66b4\u9732Context\u5bf9\u8c61
\nexport const { Provider, Consumer } = React.createContext()<\/p>\n

export default class Grandpa extends Component {
\n state = { username: 'aDiao', age: 20 }
\n changeMessage = () => {
\n this.setState({ username: '\u554a\u53fc', age: 18 })
\n }
\n render() {
\n const { username, age } = this.state
\n return (
\n <div className='grandpa'>
\n <h3>\u6211\u662f\u7956\u7ec4\u4ef6<\/h3>
\n <h4>\u6211\u7684\u7528\u6237\u540d\u662f：{username}<\/h4>
\n <h4>\u6211\u7684\u5e74\u9f84\u662f：{age}<\/h4>
\n <button onClick={this.changeMessage}>\u70b9\u6211\u66f4\u6539\u4fe1\u606f<\/button>
\n <Provider value={{ username, age }}>
\n <Parent \/>
\n <\/Provider>
\n <\/div>
\n )
\n }
\n}<\/p>\n

\/\/\u540e\u4ee3\u7ec4\u4ef6
\nimport React, { Component } from 'react'
\n\/\/ \u5bfc\u5165Grandpa\u7ec4\u4ef6\u4e2d\u66b4\u9732\u51fa\u6765\u7684Context\u5bf9\u8c61\u7684Consumer
\nimport { Consumer } from '.\/Grandpa'<\/p>\n

export default class Son extends Component {
\n render() {
\n return (
\n <Consumer>
\n {
\n (value) => {
\n return (<div className='son' >
\n <h3>\u6211\u662f\u5b50\u7ec4\u4ef6<\/h3>
\n <h4>\u6211\u63a5\u6536\u5230\u7684\u7528\u6237\u540d\u662f：{value.username}<\/h4>
\n <h4>\u6211\u63a5\u6536\u5230\u7684\u5e74\u9f84\u662f：{value.age}<\/h4>
\n <\/div >）
\n }
\n }
\n <\/Consumer ><\/p>\n

)
\n }
\n}<\/p>\n

\/\/\u51fd\u6570\u5f0f\u7ec4\u4ef6\u2014\u2014\u2014\u2014\u7956\u7ec4\u4ef6
\nimport React, { useState } from 'react'
\nimport Parent from '.\/Parent'
\nimport '.\/index.css'<\/p>\n

export const { Provider, Consumer } = React.createContext()<\/p>\n

export default function Grandpa() {
\n const [user, setUser] = useState({ username: 'aDiao', age: 20 })
\n function changeMessage() {
\n setUser({
\n username: '\u554a\u53fc',
\n age: 18
\n })
\n }
\n return (
\n <div className='grandpa'>
\n <h3>\u6211\u662f\u7956\u7ec4\u4ef6<\/h3>
\n <h4>\u6211\u7684\u7528\u6237\u540d\u662f：{user.username}<\/h4>
\n <h4>\u6211\u7684\u5e74\u9f84\u662f：{user.age}<\/h4>
\n <button onClick={changeMessage}>\u70b9\u6211\u66f4\u6539\u4fe1\u606f<\/button>
\n <Provider value={user}>
\n <Parent \/>
\n <\/Provider>
\n <\/div>
\n )
\n}<\/p>\n

\/\/\u540e\u4ee3\u7ec4\u4ef6
\nimport React from 'react'
\nimport { Consumer } from '.\/Grandpa'<\/p>\n

export default function Son() {
\n return (<div className='son' >
\n <h3>\u6211\u662f\u5b50\u7ec4\u4ef6<\/h3>
\n <h4>\u6211\u63a5\u6536\u5230\u7684\u7528\u6237\u540d\u662f：
\n <Consumer>
\n {value => {
\n return `${value.username}`
\n }}
\n <\/Consumer>
\n <\/h4>
\n <h4>\u6211\u63a5\u6536\u5230\u7684\u5e74\u9f84\u662f：
\n <Consumer>
\n {value => {
\n return `${value.age}`
\n }}
\n <\/Consumer><\/h4>
\n <\/div >)
\n}<\/p>\n

\u53d1\u5e03\u8ba2\u9605\u00a0pubsub<\/p>\n

\u6d88\u606f\u8ba2\u9605\u4e0e\u53d1\u5e03<\/p>\n

\u7c7b\u7ec4\u4ef6\u548c\u51fd\u6570\u7ec4\u4ef6\u7684\u533a\u522b<\/h2>\n

\u7c7b\u7ec4\u4ef6\u548c\u51fd\u6570\u5f0f\u7ec4\u4ef6\u7684\u533a\u522b<\/p>\n

\u5168\u5c40\u72b6\u6001\u7ba1\u7406react-redux<\/h2>\n

redux<\/p>\n

\u8def\u7531<\/h2>\n

\u8def\u7531<\/p>\n<\/p>\n

\u8def\u7531\u4f20\u53c2<\/p>\n

\u53d7\u63a7\u7ec4\u4ef6\u548c\u975e\u53d7\u63a7\u7ec4\u4ef6<\/h2>\n

\u53d7\u63a7\u7ec4\u4ef6\u548c\u975e\u53d7\u63a7\u7ec4\u4ef6<\/p>\n

\u9ad8\u9636\u7ec4\u4ef6<\/h2>\n

\u81f3\u5c11\u6ee1\u8db3\u4e0b\u9762\u4e00\u4e2a\u6761\u4ef6<\/p>\n

\u00a0 \u00a0 \u00a0\u00a0 \u63a5\u53d7\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u51fd\u6570\u4f5c\u4e3a\u8f93\u5165<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0\u8f93\u51fa\u4e00\u4e2a\u51fd\u6570<\/p>\n<\/p>\n

\u9ad8\u9636\u7ec4\u4ef6<\/p>\n

Fiber<\/h2>\n

React Fiber\u7b97\u6cd5\u662fReact 16\u4e2d\u5f15\u5165\u7684\u65b0\u7684diff\u7b97\u6cd5\u3002\u4e4b\u524d\u7684diff\u7b97\u6cd5(\u5373Stack Reconciler)\u662f\u9012\u5f52\u8c03\u7528,\u5728\u5904\u7406\u5927\u91cf\u5b50\u5143\u7d20\u65f6\u4f1a\u5bfc\u81f4\u6808\u6ea2\u51fa\u3002<\/p>\n

Fiber\u7b97\u6cd5\u57fa\u4e8e\u865a\u62dfDOM\u6811\u6765\u5bf9\u771f\u5b9eDOM\u6811\u8fdb\u884c\u589e\u91cf\u6e32\u67d3\u3002\u5b83\u5c06\u865a\u62dfDOM\u6811\u62c6\u5206\u6210\u591a\u4e2aFiber\u8282\u70b9,\u6bcf\u4e2aFiber\u8282\u70b9\u7ef4\u62a4\u81ea\u5df1\u7684\u72b6\u6001\u548c\u5b50\u6811\u3002<\/p>\n

Fiber\u89e3\u6790<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb927\u6b21\uff0c\u70b9\u8d5e10\u6b21\uff0c\u6536\u85cf24\u6b21\u3002\u7c7b\u5f0f\u7ec4\u4ef6\u751f\u547d\u5468\u671f\u51fd\u6570\u5f0f\u7ec4\u4ef6hook\u7ec4\u4ef6\u901a\u4fe1\u7c7b\u7ec4\u4ef6\u548c\u51fd\u6570\u7ec4\u4ef6\u7684\u533a\u522b\u5168\u5c40\u72b6\u6001\u7ba1\u7406react-redux\u8def\u7531\u53d7\u63a7\u7ec4\u4ef6\u548c\u975e\u53d7\u63a7\u7ec4\u4ef6\u9ad8\u9636\u7ec4\u4ef6Fiber<\/p>\n","protected":false},"author":2,"featured_media":37367,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[723,524,87,885],"topic":[],"class_list":["post-37369","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-react","tag-react-js","tag-87","tag-885"],"yoast_head":"\n\u3010\u9762\u8bd5 \u00b7 \u4e09\u3011react\u5927\u96c6\u5408\uff08\u7c7b\u5f0f\/\u51fd\u6570\u5f0f\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/37369.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010\u9762\u8bd5 \u00b7 \u4e09\u3011react\u5927\u96c6\u5408\uff08\u7c7b\u5f0f\/\u51fd\u6570\u5f0f\uff09 - 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