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React exposes a few built-in components that you can use in your JSX.
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React met à disposition des composants que vous pouvez utiliser dans votre JSX.
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</Intro>
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---
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## Built-in components {/*built-in-components*/}
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## Composants fournis {/*built-in-components*/}
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*[`<Fragment>`](/reference/react/Fragment), alternatively written as`<>...</>`, lets you group multiple JSX nodes together.
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*[`<Profiler>`](/reference/react/Profiler)lets you measure rendering performance of a React tree programmatically.
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*[`<Suspense>`](/reference/react/Suspense)lets you display a fallback while the child components are loading.
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*[`<StrictMode>`](/reference/react/StrictMode)enables extra development-only checks that help you find bugs early.
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*[`<Fragment>`](/reference/react/Fragment), qu’on peut abréger`<>...</>`, vous permet de grouper des éléments sans balise enrobante.
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*[`<Profiler>`](/reference/react/Profiler)vous permet de mesurer dans votre code les performances de rendu d'un arbre React.
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*[`<Suspense>`](/reference/react/Suspense)vous permet d'afficher un composant alternatif pendant que les enfants chargent.
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*[`<StrictMode>`](/reference/react/StrictMode)active des vérifications supplémentaires spécifiques en mode développement qui vous permettent de repérer des bugs plus tôt.
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---
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## Your own components {/*your-own-components*/}
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## Vos propres composants {/*your-own-components*/}
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You can also [define your own components](/learn/your-first-component)as JavaScript functions.
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Vous pouvez aussi [créer vos propres composants](/learn/your-first-component)avec des fonctions JavaScript.
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