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3 Commits

Author SHA1 Message Date
laktionov-as 8cc72afd7b final 2026-05-28 19:16:14 +03:00
laktionov-as a520406547 useCallback with React.memo 2026-05-26 21:28:43 +03:00
laktionov-as 38f7195ed4 useCallback 2026-05-26 21:17:42 +03:00
7 changed files with 38 additions and 213 deletions
-13
View File
@@ -5,19 +5,6 @@
<link rel="icon" type="image/svg+xml" href="/vite.svg" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Vite + React</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: Arial, Helvetica, sans-serif;
}
body {
background-color: #ecfeff;
}
</style>
</head>
<body>
<div id="root"></div>
+1 -11
View File
@@ -9,8 +9,7 @@
"version": "0.0.0",
"dependencies": {
"react": "^19.1.0",
"react-dom": "^19.1.0",
"react-icons": "^5.6.0"
"react-dom": "^19.1.0"
},
"devDependencies": {
"@eslint/js": "^9.25.0",
@@ -2462,15 +2461,6 @@
"react": "^19.1.0"
}
},
"node_modules/react-icons": {
"version": "5.6.0",
"resolved": "https://registry.npmjs.org/react-icons/-/react-icons-5.6.0.tgz",
"integrity": "sha512-RH93p5ki6LfOiIt0UtDyNg/cee+HLVR6cHHtW3wALfo+eOHTp8RnU2kRkI6E+H19zMIs03DyxUG/GfZMOGvmiA==",
"license": "MIT",
"peerDependencies": {
"react": "*"
}
},
"node_modules/react-refresh": {
"version": "0.17.0",
"resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.17.0.tgz",
+1 -2
View File
@@ -11,8 +11,7 @@
},
"dependencies": {
"react": "^19.1.0",
"react-dom": "^19.1.0",
"react-icons": "^5.6.0"
"react-dom": "^19.1.0"
},
"devDependencies": {
"@eslint/js": "^9.25.0",
+33 -60
View File
@@ -1,72 +1,45 @@
import styles from './App.module.css'
import SneakersImage from './assets/images/sneakers-image.jpg'
import { FaRegUser } from 'react-icons/fa'
import React, { useMemo, useCallback, useState } from 'react'
function handleClick(i) {
console.log(i);
}
const TodoItem = React.memo(({ item, onToggle, onDelete }) => {
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 Header() {
const handleChange = event => {
const newValue = event.target.value;
console.log(`Новое значение ${newValue}`);
}
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 (
<header className={styles.header}>
<div>
<h2>Store</h2>
<input type='text ' placeholder='Search...' onChange={handleChange} />
</div>
<div>
<FaRegUser size={24} color='#3258e3' />
<button>Profile</button>
</div>
</header>
)
}
function Product() {
const handlerMouseEnter = event => {
const img = event.target;
img.style.border = '5px solid yellow';
}
const handlerMouseOut = event => {
const img = event.target;
img.style.border = '';
console.log(event);
}
return (
<div className={styles.product}>
<img src={SneakersImage} alt='' onMouseEnter={handlerMouseEnter} onMouseOut={handlerMouseOut} />
<div className={styles.content}>
<div className={styles.title}>
<h4>Sneakers Red & White 2025</h4>
<button onClick={() => handleClick(0)} onMouseEnter={handlerMouseEnter} onMouseOut={handlerMouseOut}>+</button>
</div>
<p className={styles.description}>NIKE</p>
<p className={styles.price}>$38.00</p>
</div>
</div>
<>
<h3>List items</h3>
{items.map(item => (
<TodoItem key={item.id} item={item}
onToggle={handleToggle} onDelete={handleDelete} />
))}
</>
)
}
function App() {
return (
<>
<div className={styles.container}>
<Header />
<ul className={styles.list}>
<li>
<Product />
</li>
<li>
<Product />
</li>
<li>
<Product />
</li>
</ul>
</div>
{/* Добавьте тестовый контент для проверки */}
<h1>Hello, React!</h1>
<ItemList items={[
{id:1,name:'Первый',done:false},
{id:2,name:'Второй',done:false}
]} />
</>
)
}
-123
View File
@@ -1,123 +0,0 @@
@use './assets/styles/variables' as *;
.header {
display: flex;
justify-content: space-between;
align-items: center;
padding: 20px;
background-color: white;
border-bottom-left-radius: 10px;
border-bottom-right-radius: 10px;
div {
&:first-child {
display: flex;
align-items: center;
gap: 20px;
h2 {
color: $primary-color;
}
input {
border-radius: 5px;
outline: none;
font-size: 16px;
border: 1px solid gainsboro;
padding: 5px 10px;
&:focus {
border: 1px solid $primary-color;
}
}
}
&:last-child {
display: flex;
align-items: center;
gap: 10px;
button {
outline: 0;
border: 0;
border-radius: 5px;
padding: 5px 15px;
font-size: 16px;
background-color: $primary-color;
color: $white-color;
font-weight: 600;
cursor: pointer;
&:hover {
background-color: $seconday-color;
}
}
}
}
}
.container {
max-width: 1220px;
margin: 0 auto;
}
.list {
display: flex;
justify-content: space-between;
border-radius: 10px;
margin-top: 100px; /* временно */
padding: 20px;
background-color: white;
list-style: none;
}
.product {
display: flex;
flex-direction: column;
width: 350px;
gap: 20px;
border-radius: 10px;
}
.content {
display: flex;
flex-direction: column;
gap: 10px;
}
.title {
display: flex;
justify-content: space-between;
align-items: center;
h4 {
font-size: 18px;
}
button {
background-color: black;
color: white;
border: 0;
border-radius: 50%;
outline: 0;
font-size: 20px;
padding: 5px 10px;
cursor: pointer;
}
}
img {
border-radius: 10px;
}
.description {
color: gray;
}
.price {
font-weight: bold;
}
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+1 -2
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@@ -1,9 +1,8 @@
import { StrictMode } from 'react'
import { createRoot } from 'react-dom/client'
// удаляем import './index.css'
import App from './App.jsx'
createRoot(document.getElementById('root')).render(
<StrictMode>
<App />
</StrictMode>
)