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5 changed files with 1303 additions and 45 deletions
+1256 -9
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+4 -1
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@@ -4,12 +4,13 @@
"version": "0.0.0", "version": "0.0.0",
"type": "module", "type": "module",
"scripts": { "scripts": {
"dev": "vite", "dev": "vite",
"build": "vite build", "build": "vite build",
"lint": "eslint .", "lint": "eslint .",
"preview": "vite preview" "preview": "vite preview"
}, },
"dependencies": { "dependencies": {
"info": "^1.0.0",
"react": "^19.1.0", "react": "^19.1.0",
"react-dom": "^19.1.0" "react-dom": "^19.1.0"
}, },
@@ -22,6 +23,8 @@
"eslint-plugin-react-hooks": "^5.2.0", "eslint-plugin-react-hooks": "^5.2.0",
"eslint-plugin-react-refresh": "^0.4.19", "eslint-plugin-react-refresh": "^0.4.19",
"globals": "^16.0.0", "globals": "^16.0.0",
"sass": "^1.99.0",
"sass-embedded": "^1.99.0",
"vite": "^6.3.5" "vite": "^6.3.5"
} }
} }
+18 -34
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@@ -1,45 +1,29 @@
import React, { useMemo, useCallback, useState } from 'react' import styles from './styles/App.module.scss'
import React, { useState, useCallback } from 'react'
const TodoItem = React.memo(({ item, onToggle, onDelete }) => { function CounterButton({label, onClick}) {
console.log(`rendred ${item.id}`);
return <li>
{item.name}
<button onClick={() => onToggle(item.id)}>Done</button>
<button onClick={() => onDelete(item.id)}>remove</button>
</li>
})
function ItemList({ items }) {
const handleToggle = useCallback(id => {
items.done = true;
console.log(`Item ${id} done`)
console.log(id)
},[]);
const handleDelete = useCallback(id => {
items.pop(id);
},[]);
return ( return (
<> <button onClick={onClick} className={styles.counter_button}>{label}</button>
<h3>List items</h3>
{items.map(item => (
<TodoItem key={item.id} item={item}
onToggle={handleToggle} onDelete={handleDelete} />
))}
</>
) )
} }
function CounterDisplay({value}) {
return (<div className={styles.counter_display}>
Значение счетчика: <b>{value}</b>
</div>)
}
function App() { function App() {
const [counter,setCounter] = useState(0);
const increment = () => setCounter(prev => prev + 1);
const decrement = () => setCounter(prev => prev - 1);
return ( return (
<> <>
{/* Добавьте тестовый контент для проверки */} <h2>Практика по созданию счетчика с колбэками</h2>
<h1>Hello, React!</h1> <CounterButton label="Увеличить" onClick={increment} />
<ItemList items={[ <CounterButton label="уменьшить" onClick={decrement} />
{id:1,name:'Первый',done:false}, <CounterDisplay value={counter} />
{id:2,name:'Второй',done:false}
]} />
</> </>
) )
} }
+3 -1
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@@ -1,8 +1,10 @@
import { StrictMode } from 'react' import { StrictMode } from 'react'
import { createRoot } from 'react-dom/client' import { createRoot } from 'react-dom/client'
// удаляем import './index.css'
import App from './App.jsx' import App from './App.jsx'
createRoot(document.getElementById('root')).render( createRoot(document.getElementById('root')).render(
<StrictMode>
<App /> <App />
</StrictMode>
) )
+22
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@@ -0,0 +1,22 @@
.container {
display:flex;
flex-direction: row;
border: 1px solid black;
border-radius: 5px;
margin-bottom: 10px;
p {
padding: 5px 10px;
}
}
.counter {
&_display{
border: 1px solid black;
border-width: 3px;
border-radius: 10px;
padding: 10px;
width: 300px;
}
&_button{
padding: 10px;
}
}