React를 사용하여 간단하고 사용하기 쉬운 온라인 쇼핑 웹사이트를 개발하는 방법

npx create-react-app shopping-site

import React from 'react';

class Product extends React.Component {
    render() {
        return (
            <div>
                <h2>{this.props.name}</h2>
                <p>{this.props.description}</p>
                <p>${this.props.price}</p>
                <button>Add to Cart</button>
            </div>
        );
    }
}

export default Product;

const products = [
    {
        id: 1,
        name: 'Product 1',
        description: 'This is product 1',
        price: 10
    },
    {
        id: 2,
        name: 'Product 2',
        description: 'This is product 2',
        price: 20
    },
    {
        id: 3,
        name: 'Product 3',
        description: 'This is product 3',
        price: 30
    }
];

export default products;

import React from 'react';
import Product from './Product';
import products from './products';

class Cart extends React.Component {
    constructor(props) {
        super(props);
        this.state = {
            cartItems: []
        };
    }

    addToCart(product) {
        this.setState(prevState => ({
            cartItems: [...prevState.cartItems, product]
        }));
    }

    render() {
        return (
            <div>
                <h1>Shopping Cart</h1>
                {products.map(product => (
                    <Product
                        key={product.id}
                        name={product.name}
                        description={product.description}
                        price={product.price}
                        addToCart={() => this.addToCart(product)}
                    />
                ))}
                <h2>Cart Items</h2>
                {this.state.cartItems.map(item => (
                    <div key={item.id}>
                        <p>{item.name}</p>
                        <p>${item.price}</p>
                    </div>
                ))}
            </div>
        );
    }
}

export default Cart;

import React from 'react';
import ReactDOM from 'react-dom';
import Cart from './Cart';

ReactDOM.render(
    <React.StrictMode>
        <Cart />
    </React.StrictMode>,
    document.getElementById('root')
);

npm start