Compare commits
7 Commits
| Author | SHA1 | Date | |
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| b70fa47bbc | |||
| bd35029fc1 | |||
| 92dc5df96b | |||
| 3d34262203 | |||
| 1bc2e883a1 | |||
| 8a8a17f44d | |||
| 8f46470a26 |
Generated
+1256
-9
File diff suppressed because it is too large
Load Diff
@@ -10,6 +10,7 @@
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"preview": "vite preview"
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},
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"dependencies": {
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"info": "^1.0.0",
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"react": "^19.1.0",
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"react-dom": "^19.1.0"
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},
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@@ -22,6 +23,8 @@
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"eslint-plugin-react-hooks": "^5.2.0",
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"eslint-plugin-react-refresh": "^0.4.19",
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"globals": "^16.0.0",
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"sass": "^1.99.0",
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"sass-embedded": "^1.99.0",
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"vite": "^6.3.5"
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}
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}
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+18
-100
@@ -1,111 +1,29 @@
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import React from 'react'
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import styles from './styles/App.module.scss'
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import React, { useState, useCallback } from 'react'
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class ErrorBoundary extends React.Component {
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constructor(props) {
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super(props);
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this.state = {hasError: false};
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}
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static getDerivedStateFromError(error) {
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return { hasError: true }
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}
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componentDidCatch(error,info) {
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console.log(error,info);
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}
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handlerReset = () => {
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this.setState({hasError: false});
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}
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render() {
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if (this.state.hasError) {
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return (
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<div>
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<h1>Что то поломалось</h1>
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<button onClick={this.handlerReset}>Повторить</button>
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</div>)
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}
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return this.props.children;
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}
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}
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class AdvancedErrorBoundary extends React.Component {
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constructor(props) {
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super(props);
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this.state = {
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hasError: false,
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error: null,
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errorInfo: null
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}
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}
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static getDerivedStateFromError(error) {
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return { hasErorr: true }
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}
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componentDidCatch(error, info) {
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this.setState({
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error: error,
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errorInfo: info
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})
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}
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handleReset = () => {
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this.setState({
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hasError:false,
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error: null,
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errorInfo:null
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});
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}
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render() {
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if(this.state.hasError) {
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console.log('Error');
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return (
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<div>
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<h2>Произошла ошибка</h2>
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<p>Извеняемся, работаем, исправляем. Разработчика привязали к батарее</p>
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<button onClick={this.handleReset}>Попробовать снова</button>
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</div>
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)
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}
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//Если ошибок нет, то рендрим дочерние объекты
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return this.props.children
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}
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}
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function ProblemComponent() {
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const [counter,setCounter] = React.useState(0)
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const handlerClick = () => setCounter(counter + 1)
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React.useEffect(() => {
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if (counter > 5) {
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throw new Error("Ошибка в компоненте");
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}
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},[counter]);
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function CounterButton({label, onClick}) {
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return (
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<div>
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<h2>Счетчик: {counter}</h2>
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<button onClick={handlerClick}>Прибавить</button>
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</div>
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<button onClick={onClick} className={styles.counter_button}>{label}</button>
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)
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}
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function CounterDisplay({value}) {
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return (<div className={styles.counter_display}>
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Значение счетчика: <b>{value}</b>
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</div>)
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}
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function App() {
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const [counter,setCounter] = useState(0);
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const increment = () => setCounter(prev => prev + 1);
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const decrement = () => setCounter(prev => prev - 1);
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return (
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<>
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<h1>Обработка ошибок в компонентах</h1>
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<ErrorBoundary>
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<ProblemComponent />
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</ErrorBoundary>
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<ErrorBoundary>
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<ProblemComponent />
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</ErrorBoundary>
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<ErrorBoundary>
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<ProblemComponent />
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</ErrorBoundary>
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<h2>Практика по созданию счетчика с колбэками</h2>
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<CounterButton label="Увеличить" onClick={increment} />
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<CounterButton label="уменьшить" onClick={decrement} />
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<CounterDisplay value={counter} />
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</>
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)
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}
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Reference in New Issue
Block a user