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2 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
| 5ee1bf2eee | |||
| c137c644e3 |
Generated
+9
-1256
File diff suppressed because it is too large
Load Diff
@@ -10,7 +10,6 @@
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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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@@ -23,8 +22,6 @@
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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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+33
-18
@@ -1,29 +1,44 @@
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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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import React from 'react'
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function CounterButton({label, onClick}) {
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return (
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<button onClick={onClick} className={styles.counter_button}>{label}</button>
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)
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class Clock extends React.Component {
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constructor(props) {
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super(props)
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this.state = { time: new Date().toLocaleTimeString() }
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}
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componentDidMount() {
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this.timerId = setInterval(()=>{
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this.setState({ time: new Date().toLocaleTimeString() })
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}, 1000);
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console.log('Таймер смонтирован')
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}
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componentDidUpdate(prevProps,prevState) {
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console.log('Компонент обнвлен')
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}
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componentWillUnmount() {
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clearInterval(this.timerId)
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console.log('Компонент таймера размонтирован')
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}
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render() {
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return <div>
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<h2>Текущее время: {this.state.time}</h2>
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</div>
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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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const [showClock, setShowClock] = React.useState(true);
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return (
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<>
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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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<h1>Жизненный цикл компонента часов</h1>
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<button onClick={()=> setShowClock(!showClock)}>
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{showClock ? 'Скрыть часы' : 'Показать часы' }
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</button>
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{showClock && <Clock />}
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</>
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)
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}
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@@ -4,7 +4,5 @@ import { createRoot } from 'react-dom/client'
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import App from './App.jsx'
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createRoot(document.getElementById('root')).render(
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<StrictMode>
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<App />
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</StrictMode>
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)
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