what is reactjs
React is a declarative, efficient, and flexible JavaScript library for
building user interfaces or UI components. It lets you compose complex UIs
from small and isolated pieces of code called “components”.
It is used by large, established companies and newly-minted startups
alike (Netflix, Airbnb, Instagram, and the New York Times, to name a few).
React brings many advantages to the table, making it a better choice
than other frameworks like Angular.js.react.js
class ShoppingList extends React.Component {
render() {
return (
<div className="shopping-list">
<h1>Shopping List for {this.props.name}</h1>
<ul>
<li>Instagram</li>
<li>WhatsApp</li>
<li>Oculus</li>
</ul>
</div>
);
}
}
// Example usage: <ShoppingList name="Mark" />react js
function Cart() {
const monsteraPrice = 8
const [cart, updateCart] = useState(0)
const [isOpen, setIsOpen] = useState(false)
return isOpen ? (
<div className='lmj-cart'>
<button onClick={() => setIsOpen(false)}>Fermer</button>
<h2>Panier</h2>
<div>
Monstera : {monsteraPrice}€
<button onClick={() => updateCart(cart + 1)}>
Ajouter
</button>
</div>
<h3>Total : {monsteraPrice * cart}€</h3>
</div>
) : (
<button onClick={() => setIsOpen(true)}>Ouvrir le Panier</button>
)
}reactjs
{"id":28,"results":[{"id":"533ec651c3a368544800003e","iso_639_1":"en","iso_3166_1":"US","key":"ggX1DPfBLw8","name":"Josh Olson on APOCALYPSE NOW","site":"YouTube","size":720,"type":"Featurette"},{"id":"533ec651c3a368544800003d","iso_639_1":"en","iso_3166_1":"US","key":"CxENJ2LwecY","name":"Apocalypse Now redux - Trailer - HQ","site":"YouTube","size":480,"type":"Trailer"},{"id":"5619ceddc3a3681c28001101","iso_639_1":"en","iso_3166_1":"US","key":"yafLm-ByQWo","name":"Apocalypse Now : Redux - Alternate Trailer","site":"YouTube","size":720,"type":"Trailer"},{"id":"5b960ae80e0a26197302de0e","iso_639_1":"en","iso_3166_1":"US","key":"P-Z2mIKWFcg","name":"Apocalypse Now ≣ 1979 ≣ Trailer","site":"YouTube","size":1080,"type":"Trailer"},{"id":"5ce9507f925141669eb83d14","iso_639_1":"en","iso_3166_1":"US","key":"9l-ViOOFH-s","name":"APOCALYPSE NOW: FINAL CUT - Official Trailer - Dir. by Francis Ford Coppola","site":"YouTube","size":1080,"type":"Trailer"},{"id":"5d1a150aca4f67001ed720d5","iso_639_1":"en","iso_3166_1":"US","key":"gIUIefO_2x0","name":"APOCALYPSE NOW FINAL CUT - 4K Restoration in Theaters 8/15 & on 4K Combo Pack 8/27!","site":"YouTube","size":1080,"type":"Trailer"}]}Copyright © 2021 Codeinu
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