Erreur React Cannot read properties of undefined (reading map) dans DisplayedArt

Question

Bonjour, J'ai bien suivi le code du cours, pourtant j'ai une erreur dans la console qui m'empêche d'avancer au sujet du .map() dans DisplayedArticles.js . Voici l'erreur affichée : Uncaught TypeError: Cannot read properties of undefined (reading 'map') at DiplayedArticles (DisplayedArticles.js:7:1) at renderWithHooks (react-dom.development.js:16305:1) at mountIndeterminateComponent (react-dom.development.js:20074:1) at beginWork (react-dom.development.js:21587:1) at HTMLUnknownElement.callCallback (react-dom.development.js:4164:1) at Object.invokeGuardedCallbackDev (react-dom.development.js:4213:1) at invokeGuardedCallback (react-dom.development.js:4277:1) at beginWork$1 (react-dom.development.js:27451:1) at performUnitOfWork (react-dom.development.js:26557:1) at workLoopSync (react-dom.development.js:26466:1) at renderRootSync (react-dom.development.js:26434:1) at performSyncWorkOnRoot (react-dom.development.js:26085:1) at flushSyncCallbacks (react-dom.development.js:12042:1) at flushSync (react-dom.development.js:26201:1) at Object.scheduleRoot (react-dom.development.js:27810:1) at react-refresh-runtime.development.js:284:1 at Set.forEach () at Object.performReactRefresh (react-refresh-runtime.development.js:263:) Et le code de mon DisplayArticles.js : import React from 'react'; import DisplayedArticle from './DisplayedArticle/DisplayedArticle'; import classes from './DisplayedArticles.module.css'; function DiplayedArticles(props) { let articles = props.articles.map(article => ( )); return (

{articles}

); } export default DiplayedArticles;

Louis-Nicolas Leuillet · Accepted Answer

Hello Claire-Lise
Ici, vous avez un problème avec votre variable props.articles qui ne contient rien.
Avez-vous effectivement une propriété articles quand vous appelez le composant DiplayedArticles ? :)

Erreur React Cannot read properties of undefined (reading map) dans DisplayedArt

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