React JS?? ???? ???? ?? ????? 5?? ?? ??? ??? ????. ? ??? React ?? ???

1. ????
2. ???, ???
3. ???
4. ?????
5. ??

????
?? ??? ??????? ?? ???? ???? ? ????.
?: ?? ? ???? Button ?? ??

function Button({ label, onClick }) {
  return <button onClick={onClick}>{label}</button>;
}

function App() {
  return (
    <div>
      <Button label="Submit" onClick={() => alert('Submit clicked')} />
      <Button label="Cancel" onClick={() => alert('Cancel clicked')} />
    </div>
  );
}

???
?? ??? ??? ???? ????? ?? ??? ?????.
?: ??? ???? ????? UserProfile ?? ??

function UserProfile({ name, email }) {
  return (
    <div>
      <h3>{name}</h3>
      <p>Email: {email}</p>
    </div>
  );
}

function App() {
  return (
    <UserProfile name="John Doe" email="john@example.com" />
  );
}

???
?? ???? ??? ??? ?? ?? ?? ??? ????? ??? ? ????.
?: PrimaryButton? SecondaryButton?? ??

function PrimaryButton({ label, onClick }) {
  return <button style={{ backgroundColor: 'blue', color: 'white' }} onClick={onClick}>{label}</button>;
}

function SecondaryButton({ label, onClick }) {
  return <button style={{ backgroundColor: 'gray', color: 'white' }} onClick={onClick}>{label}</button>;
}

function App({ usePrimary }) {
  return (
    <div>
      {usePrimary ? <PrimaryButton label="Click Me" onClick={() => alert('Primary clicked')} /> : 
                   <SecondaryButton label="Click Me" onClick={() => alert('Secondary clicked')} />}
    </div>
  );
}

???
?? ??? ???? ?? ?? ??? ??? ?? ?? ? ?? ??? ???? ?? ??? ? ????.
?: ? ??? ?? ? ?? ?? ???? ??

function Product({ name, price }) {
  return (
    <div>
      <h3>{name}</h3>
      <p>Price: ${price}</p>
    </div>
  );
}

function ProductList() {
  const products = [
    { name: 'iPhone 13', price: 999 },
    { name: 'Samsung Galaxy S21', price: 799 },
    { name: 'Google Pixel 6', price: 599 },
  ];

  return (
    <div>
      {products.map((product, index) => (
        <Product key={index} name={product.name} price={product.price} />
      ))}
    </div>
  );
}

function App() {
  return <ProductList />;
}

?????
?? ??? ???? ?? ????? ?? ?? ???? ????? ? ????.
?: ?? ??? ??? ??? ?? ?? ?? ?? ?? ????

function Product({ name, price }) {
  // Add a new feature to show if the product is on sale
  const isOnSale = price < 700;
  return (
    <div>
      <h3>{name}</h3>
      <p>Price: ${price} {isOnSale && <span>(On Sale!)</span>}</p>
    </div>
  );
}

function App() {
  return (
    <div>
      <Product name="Google Pixel 6" price={599} />
    </div>
  );
}

??
????? ????? ???? ?? ??? UI? ??? ? ????.
?: ???, ??, ???? ??? ???? ??

function Header() {
  return <h1>Welcome to My Shop</h1>;
}

function Product({ name, price }) {
  return (
    <div>
      <h3>{name}</h3>
      <p>Price: ${price}</p>
    </div>
  );
}

function Footer() {
  return <footer>Contact us at shop@example.com</footer>;
}

function Page() {
  return (
    <div>
      <Header />
      <Product name="Apple Watch" price={399} />
      <Footer />
    </div>
  );
}

function App() {
  return <Page />;
}

? ??? ???? ?? ????? ?? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!