Compare commits
7 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
| b70fa47bbc | |||
| bd35029fc1 | |||
| 92dc5df96b | |||
| 3d34262203 | |||
| 1bc2e883a1 | |||
| 8a8a17f44d | |||
| 8f46470a26 |
Generated
+1256
-9
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Load Diff
+4
-1
@@ -4,12 +4,13 @@
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"version": "0.0.0",
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"type": "module",
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"scripts": {
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"dev": "vite",
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"dev": "vite",
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"build": "vite build",
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"lint": "eslint .",
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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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+20
-57
@@ -1,67 +1,30 @@
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import React, { useState, useReducer, useRef, memo } 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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function tasksReducer(state, action) {
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switch(action.type) {
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case 'ADD_TASK':
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return [...state, action.payload]
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case 'TOGGLE_TASK':
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return state.map(task => task.id === action.payload ? {...task, complite: !task.complite} : task)
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case 'REMOVE_TASK':
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return state.filter(task => task.id !== action.payload)
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default:
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return state
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}
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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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}
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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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const TaskList = memo(function TaskList({tasks, onToggle, onRemove}) {
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console.log("Rendred")
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return (
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<ul>
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{tasks.map(({id, text, complite}) => (
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<li key={id}
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style={{textDecoration: complite ? 'line-through' : 'none' }}>
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<input type="checkbox" checked={complite} onChange={()=>onToggle(id)} />
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{text}
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<button onClick={()=> onRemove(id)} style={{marginLeft: 10}}>
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Удалить
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</button>
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</li>
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))}
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</ul>
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)
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})
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function App() {
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const [tasks, dispatch] = useReducer(tasksReducer,[])
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const [input,setInput] = useState('')
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const [error,setError] = useState('')
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const inputRef = useRef(null)
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const [counter,setCounter] = useState(0);
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const addTask = () => {
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if (input.trim() === '') {
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setError('Пустой текст задачи')
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return
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}
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setError('')
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dispatch({
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type: 'ADD_TASK',
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payload: {id: Date.now(), text: input.trim(), complite: false }
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})
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setInput('')
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inputRef.current.focus()
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}
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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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<div style={{padding: 20}}>
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<h1>Список дел</h1>
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<input ref={inputRef} value={input} onChange={e => setInput(e.target.value)} />
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<button onClick={addTask}>Добавить</button>
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{error && <p style={{color: 'red'}}>{error}</p>}
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<TaskList tasks={tasks}
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onToggle={id => dispatch({type: 'TOGGLE_TASK', payload: id})}
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onRemove={id => dispatch({type: 'REMOVE_TASK', payload: id})} />
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</div>
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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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</>
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)
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}
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