Lifecycle (didMount, didUpdate, willUnmount) – Videokurs: React.js

<!DOCTYPE html> <html lang="de"> <head> <meta name="pageKey" content="d_learning_course_video_guest">  <meta name="linkedin:pageTag" content="view_video"> <meta name="locale" content="de_DE"> <meta id="config" data-app-version="2.0.2217" data-call-tree-id="AAYnnSjTR5OWN1RILRLRxA==" data-multiproduct-name="learning-guest-frontend" data-service-name="learning-guest-frontend" data-browser-id="5ef90653-02ad-4370-8170-1a8c0e659868" data-enable-page-view-heartbeat-tracking data-page-instance="urn:li:page:learning_course_video_guest;hzO+E9A0Rr2OIttKrX7CrA==" data-disable-jsbeacon-pagekey-suffix="false" data-member-id="0"> <link rel="canonical" href="https://de.linkedin.com/learning/react-grundkurs/lifecycle-didmount-didupdate-willunmount">     <link rel="manifest" href="/homepage-guest/manifest.json" crossorigin="use-credentials">  <script> function getDfd() {let yFn,nFn;const p=new Promise(function(y, n){yFn=y;nFn=n;});p.resolve=yFn;p.reject=nFn;return p;} window.lazyloader = getDfd(); window.tracking = getDfd(); window.impressionTracking = getDfd(); window.ingraphTracking = getDfd(); window.appDetection = getDfd(); window.pemTracking = getDfd(); </script>  <link rel="icon" href="https://static.licdn.com/aero-v1/sc/h/444zstxv7s91nepfm5et6ofge"> <title>Lifecycle (didMount, didUpdate, willUnmount) – Videokurs: React.js | LinkedIn Learning, früher Lynda.com</title> <meta name="robots" content="noarchive, max-image-preview:large"> <meta name="description" content="Der React Lifecycle beschreibt, wie sich Ihre Applikation verhält bzw. wann sie entsprechende Methoden aufruft und damit Ihre Applikation genauso darstellt, wie Sie das wollen. 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Hier lernen Sie den Lifecycle im Detail kennen und erfahren, wie Sie sich die weiteren Lifecycle-Methoden zu Nutze machen können."> <meta property="og:image" content="https://media.licdn.com/dms/image/v2/C4E0DAQG1_kl-LQOIhQ/learning-public-crop_675_1200/learning-public-crop_675_1200/0/1652352947144?e=2147483647&v=beta&t=w4OLRH9aBJX3GciWpi9MfhhTJwTY-GW36UBkTsN_mSc"> <meta name="twitter:image" content="https://media.licdn.com/dms/image/v2/C4E0DAQG1_kl-LQOIhQ/learning-public-crop_675_1200/learning-public-crop_675_1200/0/1652352947144?e=2147483647&v=beta&t=w4OLRH9aBJX3GciWpi9MfhhTJwTY-GW36UBkTsN_mSc">  <meta property="og:url" content="https://de.linkedin.com/learning/react-grundkurs/lifecycle-didmount-didupdate-willunmount"> <meta property="og:type" content="website"> <meta name="clientSideIngraphs" content="1" data-gauge-metric-endpoint="/learning-guest/api/ingraphs/gauge" data-counter-metric-endpoint="/learning-guest/api/ingraphs/counter"> <link rel="stylesheet" href="https://static.licdn.com/aero-v1/sc/h/6es157d0jbv932d1tucuon59m"> <script type="application/ld+json"> {"@context":"http://schema.org/","@type":"VideoObject","name":"Lifecycle (didMount, didUpdate, willUnmount) - React Grundkurs","author":{"@type":"Person","name":"David Lorenz","url":"https://de.linkedin.com/learning/instructors/david-lorenz"},"thumbnailUrl":"https://media.licdn.com/dms/image/v2/C4E0DAQG1_kl-LQOIhQ/learning-public-crop_675_1200/learning-public-crop_675_1200/0/1652352947144?e=2147483647&v=beta&t=w4OLRH9aBJX3GciWpi9MfhhTJwTY-GW36UBkTsN_mSc","description":"Die umfangreiche Einführung in das JavaScript-Webframework React mit vielen Praxisbeispielen und Übungen.","duration":"PT6M41S","datePublished":"2022-05-20","uploadDate":"2022-05-20","requiresSubscription":false,"isAccessibleForFree":true,"contentUrl":"https://de.linkedin.com/learning/react-grundkurs/lifecycle-didmount-didupdate-willunmount","interactionCount":2467,"interactionStatistic":[{"@type":"InteractionCounter","interactionType":"http://schema.org/WatchAction","userInteractionCount":2467}],"transcript":"Render führt dazu, dass im Browser ein finales Ergebnis angezeigt wird. Wir haben auch gesehen, dass Änderungen im State dazu führen, dass dieses Ergebnis geupdatet wird. Das ist Teil des React-Lifecycles, denn wir uns nun näher anschauen, um ein besseres Verständnis zu bekommen. Dabei lernen wir auch die Lifecycle-Methoden componentDidUpdate(), shouldComponentUpdate() und componentWillUnmount() kennen. Beim Mounten einer Component wird render das erste Mal aufgerufen. Dann wird componentDidMount aufgerufen, was Ihnen die Möglichkeit gibt, bspw. Timer zu setzen oder Daten von einem Server zu laden. Wenn dann ein Update erfolgt, so wird die render-Methode erneut aufgerufen, um den neuen Zustand darzustellen. Ein solches Update kann durch mehrere Dinge getriggert werden. Ganz offensichtlich sind dabei Änderungen am state bspw. mit setState oder auch veränderte übergebene props-Parameter von außen. Weiterhin könnten bspw. erzwungene Updates ein solches Update und damit auch render antriggern. Ist ein solches Update und damit auch das rerendern erfolgt, so wird componentDidUpdate aufgerufen. Den automatischen Updatevorgang können wir kontrollieren mithilfe der Methode shouldComponentUpdate. Wenn diese false zurückgibt, wird React davon absehen, die Komponente neu zu rendern. Sie ruft also die render-Methode dann nicht auf. Die Methode componentWillUnmount ruft React dann auf, wenn die Komponente entfernt wird. Diese Methode ist insbesondere für Aufräumarbeiten sinnvoll, bspw. wenn man innerhalb von componentDidUpdate oder componentDidMount globale Eventlistener gesetzt hat, die man nun wieder entfernen möchte. Wir gehen nun zurück zu unserer countdown-App-Component und schauen uns dort die neuen Lifecycle-Methoden an. In unserem countdown habe ich den Initialwert auf 10 gesetzt. Wenn ich den Code nun anpasse und den Wert auf 5 setze, so bekomme ich eine Fehlermeldung. Durch die Veränderungen wurde die Komponente nämlich geunmountet und neu gemountet. Es wurde ein neues Intervall erzeugt und das alte Intervall versucht auf eine alte getState-Funktion zuzugreifen, während das neue problemlos funktioniert. Wir müssen also sicherstellen, dass beim Unmounten aufgeräumt wird. Dazu speichern wir beim Erzeugen des Intervalls eine Referenz, this.myIntervall = setIntervall(). Mit componentWillUnmount können wir dann sicherstellen, dass dieses Intervall aufgeräumt wird. Wir schreiben clearIntervall und übergeben die Referenz myInterval. Wenn wir das nun speichern und neu laden und dann etwas verändern, dann sehen wir kein Problem mehr. Ein neues Intervall wurde erzeugt und das alte wurde beim Unmounten aufgeräumt. Mit componentDidUpdate können wir beobachten, wie sich die Werte verändern. Die Methode bekommt dabei immer die alten props und den alten state übergeben, denn die neuen Werte finden Sie ja in der component selbst. Wenn wir also console.log(prevProps, prevState) machen, dann speichern und das Ganze neu laden, so sehen wir, dass bei jedem state-Change componentDidUpdate aufgerufen wird. Wir sehen aber auch, dass componentDidUpdate immer weiter aufgerufen wird. Das liegt daran, dass das Intervall unendlich lange läuft. Was wir machen könnten, wäre bspw. das Intervall beenden, sobald 0 erreicht wird. Alternativ könnten wir aber auch Gebrauch machen von shouldComponentUpdate. Dazu aktivieren wir shouldComponentUpdate und schauen, ob der aktuelle Wert schon 0 ist. if (this.state.counterValue) === 0, dann return false. Ansonsten soll die Komponente wie gewohnt updaten. Wir speichern, laden neu und schauen, was passiert. Nachdem 0 erreicht wurde, gibt es kein weiteres Update mehr. Wenn Sie sich fragen, warum counterValue === 0 hier nicht auftaucht, dann liegt das daran, dass componentDidUpdate ja immer den vorherigen Wert bekommt. 0 ist aber im aktuellen Wert. Da nach 0 kein weiteres Update mehr durchgeführt wird, gibt es auch nie 0 als vorherigen Wert. Obwohl das einwandfrei funktioniert, so wäre es dennoch stets die bessere Lösung, das Intervall aufzuräumen, denn ich komplexeren Komponenten mit mehreren state-Values würden Sie so natürlich auch alle anderen Werte vom Update ausschließen. Sie fragen sich nun vielleicht, zu was Sie componentDidUpdate gebrauchen könnten. Ein Beispiel wäre, wenn Sie einen Börsenticker bauen und sich dabei die Aktienwerte verändern. Wenn Sie dann die Differenz nehmen, können Sie anzeigen, ob die letzte Änderung nach oben oder nach unten ging. Das wäre vor allem dann hilfreich, wenn die Veränderung von außen kommt und Sie das Ganze mit prevProps anstatt mit prevState abbilden. Nun wissen Sie, wie der React-Lifecycle funktioniert und wie Sie entsprechende Lifecycle-Methoden sinnvoll einsetzen können. 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babybear:flex-none babybear:w-full babybear:flex-none babybear:w-full"> <h1 class="top-card-layout__title font-sans text-lg papabear:text-xl font-bold leading-open text-color-text mb-0"> Lifecycle (didMount, didUpdate, willUnmount) – Tutorial zu <a href="https://de.linkedin.com/learning/topics/react-js?trk=video_title_to_software_topic" data-tracking-will-navigate="true" data-tracking-control-name="video_title_to_software_topic"> React.js</a> </h1> <h2 class="top-card-layout__headline break-words font-sans text-md leading-open text-color-text"> Aus dem Kurs: <a href="https://de.linkedin.com/learning/react-grundkurs?trk=course_title" data-tracking-control-name="course_title" data-tracking-will-navigate="true" class="from-the-course__link">React Grundkurs</a> </h2>   <div class="top-card-layout__cta-container flex flex-wrap mt-0.5 papabear:mt-0 ml-[-12px]"> <a 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data-test-live-offline-tab> Offline-Wiedergabe </button> </li> </ul>  <div class="tab__panel" tabindex="0" role="tabpanel"> <section class="core-section-container my-3 transcripts">  <h2 class="core-section-container__title section-title"> Lifecycle (didMount, didUpdate, willUnmount) </h2>  <div class="core-section-container__content break-words"> <div class="transcripts__copy"> <span class="transcripts__quotation">“</span> <p> Render führt dazu, dass im Browser ein finales Ergebnis angezeigt wird. Wir haben auch gesehen, dass Änderungen im State dazu führen, dass dieses Ergebnis geupdatet wird. Das ist Teil des React-Lifecycles, denn wir uns nun näher anschauen, um ein besseres Verständnis zu bekommen. Dabei lernen wir auch die Lifecycle-Methoden componentDidUpdate(), shouldComponentUpdate() und componentWillUnmount() kennen. Beim Mounten einer Component wird render das erste Mal aufgerufen. Dann wird componentDidMount aufgerufen, was Ihnen die Möglichkeit gibt, bspw. Timer zu setzen oder Daten von einem Server zu laden. Wenn dann ein Update erfolgt, so wird die render-Methode erneut aufgerufen, um den neuen Zustand darzustellen. Ein solches Update kann durch mehrere Dinge getriggert werden. Ganz offensichtlich sind dabei Änderungen am state bspw. mit setState oder auch veränderte übergebene props-Parameter von außen. Weiterhin könnten bspw. erzwungene Updates ein solches Update und damit auch render antriggern. Ist ein solches Update und damit auch das rerendern erfolgt, so wird componentDidUpdate aufgerufen. Den automatischen Updatevorgang können wir kontrollieren mithilfe der Methode shouldComponentUpdate. Wenn diese false zurückgibt, wird React davon absehen, die Komponente neu zu rendern. Sie ruft also die render-Methode dann nicht auf. Die Methode componentWillUnmount ruft React dann auf, wenn die Komponente entfernt wird. Diese Methode ist insbesondere für Aufräumarbeiten sinnvoll, bspw. wenn man innerhalb von componentDidUpdate oder componentDidMount globale Eventlistener gesetzt hat, die man nun wieder entfernen möchte. Wir gehen nun zurück zu unserer countdown-App-Component und schauen uns dort die neuen Lifecycle-Methoden an. In unserem countdown habe ich den Initialwert auf 10 gesetzt. Wenn ich den Code nun anpasse und den Wert auf 5 setze, so bekomme ich eine Fehlermeldung. Durch die Veränderungen wurde die Komponente nämlich geunmountet und neu gemountet. Es wurde ein neues Intervall erzeugt und das alte Intervall versucht auf eine alte getState-Funktion zuzugreifen, während das neue problemlos funktioniert. Wir müssen also sicherstellen, dass beim Unmounten aufgeräumt wird. Dazu speichern wir beim Erzeugen des Intervalls eine Referenz, this.myIntervall = setIntervall(). Mit componentWillUnmount können wir dann sicherstellen, dass dieses Intervall aufgeräumt wird. Wir schreiben clearIntervall und übergeben die Referenz myInterval. Wenn wir das nun speichern und neu laden und dann etwas verändern, dann sehen wir kein Problem mehr. Ein neues Intervall wurde erzeugt und das alte wurde beim Unmounten aufgeräumt. Mit componentDidUpdate können wir beobachten, wie sich die Werte verändern. Die Methode bekommt dabei immer die alten props und den alten state übergeben, denn die neuen Werte finden Sie ja in der component selbst. Wenn wir also console.log(prevProps, prevState) machen, dann speichern und das Ganze neu laden, so sehen wir, dass bei jedem state-Change componentDidUpdate aufgerufen wird. Wir sehen aber auch, dass componentDidUpdate immer weiter aufgerufen wird. Das liegt daran, dass das Intervall unendlich lange läuft. Was wir machen könnten, wäre bspw. das Intervall beenden, sobald 0 erreicht wird. Alternativ könnten wir aber auch Gebrauch machen von shouldComponentUpdate. Dazu aktivieren wir shouldComponentUpdate und schauen, ob der aktuelle Wert schon 0 ist. if (this.state.counterValue) === 0, dann return false. Ansonsten soll die Komponente wie gewohnt updaten. Wir speichern, laden neu und schauen, was passiert. Nachdem 0 erreicht wurde, gibt es kein weiteres Update mehr. Wenn Sie sich fragen, warum counterValue === 0 hier nicht auftaucht, dann liegt das daran, dass componentDidUpdate ja immer den vorherigen Wert bekommt. 0 ist aber im aktuellen Wert. Da nach 0 kein weiteres Update mehr durchgeführt wird, gibt es auch nie 0 als vorherigen Wert. Obwohl das einwandfrei funktioniert, so wäre es dennoch stets die bessere Lösung, das Intervall aufzuräumen, denn ich komplexeren Komponenten mit mehreren state-Values würden Sie so natürlich auch alle anderen Werte vom Update ausschließen. Sie fragen sich nun vielleicht, zu was Sie componentDidUpdate gebrauchen könnten. Ein Beispiel wäre, wenn Sie einen Börsenticker bauen und sich dabei die Aktienwerte verändern. Wenn Sie dann die Differenz nehmen, können Sie anzeigen, ob die letzte Änderung nach oben oder nach unten ging. Das wäre vor allem dann hilfreich, wenn die Veränderung von außen kommt und Sie das Ganze mit prevProps anstatt mit prevState abbilden. Nun wissen Sie, wie der React-Lifecycle funktioniert und wie Sie entsprechende Lifecycle-Methoden sinnvoll einsetzen können. </p> </div> </div> </section> </div>  <div class="tab__panel" tabindex="0" role="tabpanel" hidden> <section class="core-section-container my-3 offline">  <h2 class="core-section-container__title section-title"> Laden Sie Kurse herunter und lernen Sie auch unterwegs. </h2>  <div class="core-section-container__content break-words"> <p class="offline__description"> Sehen Sie sich Kurse auf Ihrem Mobilgerät ohne Internetverbindung an. 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papabear:w-right-rail-width papabear:ml-column-gutter mamabear:max-w-[790px] mamabear:px-mobile-container-padding babybear:max-w-[790px] babybear:px-mobile-container-padding"> <section class="table-of-contents mb-4"> <h2 class="table-of-contents__header"> Inhalt </h2> <ul class="table-of-contents__list"> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> Einleitung <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> Einleitung <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/die-umfangreiche-einfuhrung-in-das-javascript-webframework-react-mit-vielen-praxisbeispielen?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Die umfangreiche Einführung in das JavaScript-Webframework React mit vielen Praxisbeispielen </div> <div class="table-of-contents__item-duration"> 1 Min. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/die-github-dateien-zum-kurs-verwenden?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Die GitHub-Dateien zum Kurs verwenden </div> <div class="table-of-contents__item-duration"> 1 Min. 16 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 1. React auf einen Blick <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 1. React auf einen Blick <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/warum-react?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Warum React? </div> <div class="table-of-contents__item-duration"> 2 Min. 56 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 2. Exkurs: Modern JavaScript <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 2. Exkurs: Modern JavaScript <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/spread-rest-destructuring?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Spread, Rest & Destructuring </div> <div class="table-of-contents__item-duration"> 6 Min. 9 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/public-private-class-properties?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Public & Private Class Properties </div> <div class="table-of-contents__item-duration"> 2 Min. 22 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/arrow-functions?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Arrow Functions </div> <div class="table-of-contents__item-duration"> 2 Min. 25 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 3. React einrichten <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 3. React einrichten <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/installation-mit-cra?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Installation mit CRA </div> <div class="table-of-contents__item-duration"> 1 Min. 18 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/das-setup-im-editor?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Das Setup im Editor </div> <div class="table-of-contents__item-duration"> 2 Min. 15 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/raw-setup-mit-react-eject?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Raw-Setup mit React Eject </div> <div class="table-of-contents__item-duration"> 1 Min. 58 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/das-zusammenspiel-von-render-jsx-und-strictmode?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Das Zusammenspiel von render, JSX und StrictMode </div> <div class="table-of-contents__item-duration"> 5 Min. 12 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/react-devtools?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> React DevTools </div> <div class="table-of-contents__item-duration"> 1 Min. 12 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button show-more-less__button--hide" aria-expanded="true" data-tracking-control-name="learning-course_toc-section_show_more"> 4. Class Components <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button " aria-expanded="true" data-tracking-control-name="learning-course_toc-section_show_more"> 4. Class Components <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list " data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/render?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> render() </div> <div class="table-of-contents__item-duration"> 2 Min. 12 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/react-props?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> React-Props </div> <div class="table-of-contents__item-duration"> 4 Min. 26 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/state-componentdidmount?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> state & componentDidMount </div> <div class="table-of-contents__item-duration"> 4 Min. 29 Sek. </div> </div> </a> </li> <li class="toc-item toc-item--active"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/lifecycle-didmount-didupdate-willunmount?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="true"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Lifecycle (didMount, didUpdate, willUnmount) </div> <div class="table-of-contents__item-duration"> 6 Min. 41 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/children-ubergeben?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> children übergeben </div> <div class="table-of-contents__item-duration"> 2 Min. 37 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 5. Function Components <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 5. Function Components <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/warum-gibt-es-function-components?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Warum gibt es Function Components? </div> <div class="table-of-contents__item-duration"> 4 Min. 16 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/regeln-von-hooks?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Regeln von Hooks </div> <div class="table-of-contents__item-duration"> 2 Min. 2 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/keine-schwarze-magie-react-hooks?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Keine schwarze Magie: React Hooks </div> <div class="table-of-contents__item-duration"> 1 Min. 47 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/buttoncounter-mit-usestate?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> ButtonCounter mit useState </div> <div class="table-of-contents__item-duration"> 4 Min. 17 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/lifecycle-mit-useeffect-countdown?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Lifecycle mit useEffect: Countdown </div> <div class="table-of-contents__item-duration"> 8 Min. 3 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/usememo-bzw-usecallback?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> useMemo bzw. useCallback </div> <div class="table-of-contents__item-duration"> 5 Min. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/react-hooks-ausblick-und-tipps?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> React Hooks: Ausblick und Tipps </div> <div class="table-of-contents__item-duration"> 2 Min. 19 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/challenge-stoppuhr?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Challenge: Stoppuhr </div> <div class="table-of-contents__item-duration"> 56 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/solution-stoppuhr?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Solution: Stoppuhr </div> <div class="table-of-contents__item-duration"> 11 Min. 15 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 6. Class vs. Function Components <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 6. Class vs. Function Components <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/gemeinsamkeiten-defaultprops-displayname-proptypes?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Gemeinsamkeiten: defaultProps, displayName, propTypes </div> <div class="table-of-contents__item-duration"> 7 Min. 19 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/class-components-auf-dem-abstellgleis?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Class Components auf dem Abstellgleis </div> <div class="table-of-contents__item-duration"> 49 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 7. States und Events <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 7. States und Events <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/user-interaktionen-abfangen?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> User-Interaktionen abfangen </div> <div class="table-of-contents__item-duration"> 4 Min. 21 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/event-weitergabe-vs-addeventlistener?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Event-Weitergabe (vs. addEventListener) </div> <div class="table-of-contents__item-duration"> 3 Min. 24 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/globale-events?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Globale Events </div> <div class="table-of-contents__item-duration"> 4 Min. 44 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/challenge-position-des-mauszeigers?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Challenge: Position des Mauszeigers </div> <div class="table-of-contents__item-duration"> 44 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/solution-position-des-mauszeigers?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Solution: Position des Mauszeigers </div> <div class="table-of-contents__item-duration"> 5 Min. 46 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 8. Kontexte <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 8. Kontexte <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/theming?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Theming </div> <div class="table-of-contents__item-duration"> 5 Min. 42 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/global-state?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Global State </div> <div class="table-of-contents__item-duration"> 3 Min. 33 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 9. Iteration, Listen, Fragments und Conditionals <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 9. Iteration, Listen, Fragments und Conditionals <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/das-key-attribut-verstehen?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Das key-Attribut verstehen </div> <div class="table-of-contents__item-duration"> 3 Min. 48 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/fragments-als-virtuelle-wrapper?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Fragments als virtuelle Wrapper </div> <div class="table-of-contents__item-duration"> 4 Min. 34 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/conditional-rendering?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Conditional Rendering </div> <div class="table-of-contents__item-duration"> 4 Min. 54 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 10. Arbeiten mit (DOM)-Referenzen & Portals <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 10. Arbeiten mit (DOM)-Referenzen & Portals <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/createforwardref-useref?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> createForwardRef & useRef </div> <div class="table-of-contents__item-duration"> 5 Min. 37 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/createportal?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> createPortal </div> <div class="table-of-contents__item-duration"> 4 Min. 8 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 11. Formulare <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 11. Formulare <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/uncontrolled-forms-ref?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Uncontrolled Forms (ref) </div> <div class="table-of-contents__item-duration"> 5 Min. 16 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/controlled-forms?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Controlled Forms </div> <div class="table-of-contents__item-duration"> 6 Min. 21 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/challenge-erweiterung-des-formulars?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Challenge: Erweiterung des Formulars </div> <div class="table-of-contents__item-duration"> 54 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/solution-erweiterung-des-formulars?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Solution: Erweiterung des Formulars </div> <div class="table-of-contents__item-duration"> 4 Min. 39 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 12. Routing mit React Router & Error Boundaries <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 12. Routing mit React Router & Error Boundaries <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/standard-routing?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Standard-Routing </div> <div class="table-of-contents__item-duration"> 6 Min. 13 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/lazy-loading-mit-suspense?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Lazy-Loading mit Suspense </div> <div class="table-of-contents__item-duration"> 3 Min. 32 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/error-boundaries?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Error Boundaries </div> <div class="table-of-contents__item-duration"> 4 Min. 31 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/challenge-react-router-mit-search-parametern-nutzen?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Challenge: React Router mit Search-Parametern nutzen </div> <div class="table-of-contents__item-duration"> 56 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/solution-react-router-mit-search-parametern-nutzen?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Solution: React Router mit Search-Parametern nutzen </div> <div class="table-of-contents__item-duration"> 3 Min. 48 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 13. Styling mit React <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 13. Styling mit React <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/spaces-erzwingen-global-css-inline-css?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Spaces erzwingen, Global CSS & Inline CSS </div> <div class="table-of-contents__item-duration"> 4 Min. 5 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/sass-css-modules?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> SASS & CSS Modules </div> <div class="table-of-contents__item-duration"> 4 Min. 22 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/weitere-moglichkeiten?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Weitere Möglichkeiten </div> <div class="table-of-contents__item-duration"> 2 Min. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 14. Testing in React <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 14. Testing in React <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/setup-und-rendertest?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Setup und Rendertest </div> <div class="table-of-contents__item-duration"> 3 Min. 28 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/existenz-testen?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Existenz testen </div> <div class="table-of-contents__item-duration"> 4 Min. 30 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/inhalte-prufen-properties-validieren-und-fehler-abfangen?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Inhalte prüfen, Properties validieren und Fehler abfangen </div> <div class="table-of-contents__item-duration"> 5 Min. 47 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 15. Aufbauwissen für Fortgeschrittene <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 15. Aufbauwissen für Fortgeschrittene <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/innerhtml-jsx-kommentare?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> innerHTML && JSX-Kommentare </div> <div class="table-of-contents__item-duration"> 2 Min. 27 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/usereducer-redux?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> useReducer & Redux </div> <div class="table-of-contents__item-duration"> 2 Min. 33 Sek. </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 16. Neue Features und Funktionen in React 18 <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> <button class="show-more-less__button show-more-less__less-button show-more-less-button show-more-less__button--hide" aria-expanded="false" data-tracking-control-name="learning-course_toc-section_show_more"> 16. Neue Features und Funktionen in React 18 <icon class="show-more-less__button--chevron show-more-less-button-icon" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/4chtt12k98xwnba1nimld2oyg"></icon> </button> <ul data-max-num-to-show="0" class="show-more-less__list show-more-less__list--hide-after-0" data-impression-id="learning-course_toc-section_show-more-less"> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/react-18-concurrent-react?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> React 18: Concurrent React </div> <div class="table-of-contents__item-duration"> 2 Min. 30 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/automatic-batching?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Automatic Batching </div> <div class="table-of-contents__item-duration"> 4 Min. 13 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" 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table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> useTransition </div> <div class="table-of-contents__item-duration"> 4 Min. 55 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/usedeferredvalue?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> useDeferredValue </div> <div class="table-of-contents__item-duration"> 3 Min. 46 Sek. </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://de.linkedin.com/learning/react-grundkurs/suspense-mit-usetransition?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <span class="a11y-text">(Gesperrt)</span> <icon class="table-of-contents__item-status table-of-contents__item-status--locked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cfu0devb5o77ym5x8vv0oilfz" data-svg-class-name="table-of-contents__item-status-svg--locked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Suspense mit useTransition </div> <div class="table-of-contents__item-duration"> 5 Min. </div> </div> </a> </li> </ul>  </div> </li> </ul> </section> </section> </main> <div class="pre-footer "> <section class="core-section-container my-3 price-disclaimer">    <div class="core-section-container__content break-words"> <p class="price-disclaimer__copy"> <sup class="price-disclaimer__copy--sup">*</sup>Der Preis ist abhängig vom beim Einloggen oder bei der Registrierung angegebenen Profil- und Rechnungsland. </p> </div> </section> <section class="tw-linkster bg-cool-gray-20 browse-map" data-impression-id="learning-course_linkster" data-js-module-id="linkster"> <div class="max-w-screen-content-max-w w-full flex justify-between my-0 mx-auto mamabear:px-3 babybear:px-2 babybear:flex-col"> <div class="flex-1 w-1/2 pt-2 pr-4 pb-4 pl-0 babybear:pb-2 babybear:w-full babybear:border-b-1 babybear:border-solid babybear:border-color-border-low-emphasis babybear:last:border-b-0"> <h3 class="text-md font-bold text-color-text leading-open"> Themen der Kategorie „Business“ ansehen </h3> <ul class="my-1"> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/fuhrung-und-berufliche-weiterentwicklung?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Berufliche Weiterentwicklung </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/business-software-und-tools?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Business-Software und Tools </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/diversity-equity-und-inclusion-dei?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Diversity, Equity, Inclusion und Belonging (DEIB) </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/finanz-und-rechnungswesen?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Finanz- und Rechnungswesen </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/fuhrung-und-management-15955952?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Führung und Management </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/karriere-entwicklung-15962768?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> 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Marketing </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/personalwesen-15962946?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Personalwesen </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/projektmanagement-15955944?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Projektmanagement </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/training-und-bildung?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Training und Bildung </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/unternehmensanalyse-und-strategie?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Unternehmensanalyse und -strategie </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/verkauf-und-vertrieb-15961401?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Verkauf und Vertrieb </a> </li> </ul> <a class="link tw-linkster-general-link" aria-label="Alle Kurse anzeigen: Business" href="https://de.linkedin.com/learning/topics/business-2?trk=learning-course_browsemap_general-link" data-tracking-control-name="learning-course_browsemap_general-link" data-tracking-will-navigate> Alle anzeigen </a> </div> <div class="flex-1 w-1/2 pt-2 pr-4 pb-4 pl-0 babybear:pb-2 babybear:w-full babybear:border-b-1 babybear:border-solid babybear:border-color-border-low-emphasis babybear:last:border-b-0"> <h3 class="text-md font-bold text-color-text leading-open"> Themen der Kategorie „Kreativität“ ansehen </h3> <ul class="my-1"> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/animation-und-illustration?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Animation und Illustration </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/architektur-ingenieur-und-bauwesen-aec?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Architektur-, Ingenieur- und Bauwesen (AEC) </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/audio-und-musik?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Audio und Musik </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/bildbearbeitung-fotografie-2?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Bildbearbeitung und Fotografie </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/grafikdesign?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Grafikdesign </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/motion-design-und-visuelle-effekte?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Motion-Design und Visuelle Effekte </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/produkt-und-herstellung?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Produkt und Herstellung </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/user-experience-15995392?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> User Experience </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/video-audio-2?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Video </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/visualisierung-und-echtzeit-rendering?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Visualisierung und Echtzeit-Rendering </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/webdesign-und-ux?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Webdesign </a> </li> </ul> <a class="link tw-linkster-general-link" aria-label="Alle Kurse anzeigen: Kreativität" href="https://de.linkedin.com/learning/topics/kreativitat?trk=learning-course_browsemap_general-link" data-tracking-control-name="learning-course_browsemap_general-link" data-tracking-will-navigate> Alle anzeigen </a> </div> <div class="flex-1 w-1/2 pt-2 pr-4 pb-4 pl-0 babybear:pb-2 babybear:w-full babybear:border-b-1 babybear:border-solid babybear:border-color-border-low-emphasis babybear:last:border-b-0"> <h3 class="text-md font-bold text-color-text leading-open"> Themen der Kategorie „Technik“ ansehen </h3> <ul class="my-1"> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/cloud-computing-16105209?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Cloud-Computing </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/data-science-15956724?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Data Science </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/datenbankverwaltung?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Datenbankverwaltung </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/devops-16105665?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> DevOps </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/hardware?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Hardware </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/it-support-2?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> IT-Helpdesk </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/informations-und-it-sicherheit?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> IT-Sicherheit und Cybersecurity </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/kunstliche-intelligenz-ki?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Künstliche Intelligenz (KI) </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/mobile-entwicklung?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Mobile Entwicklung </a> </li> <li class="tw-link-column-item"> <a class="link tw-linkster-link" href="https://de.linkedin.com/learning/topics/it-operations-und-it-sicherheit?trk=learning-course_browsemap_link" data-js-module-id="link-column-link" data-tracking-control-name="learning-course_browsemap_link" data-tracking-will-navigate> Netzwerk- und Systemadministration </a> </li> <li class="tw-link-column-item"> <a class="link 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text-color-text-low-emphasis flex flex-shrink-0 justify-start p-1 relative w-50% papabear:justify-center papabear:w-auto"> <a class="li-footer__item-link flex items-center font-sans text-xs font-bold text-color-text-low-emphasis hover:text-color-link-hover focus:text-color-link-focus" href="https://www.linkedin.com/legal/cookie-policy?trk=d_learning_course_video_guest_footer-cookie-policy" data-tracking-control-name="d_learning_course_video_guest_footer-cookie-policy" data-tracking-will-navigate> Cookie-Richtlinie </a> </li> <li class="li-footer__item font-sans text-xs text-color-text-low-emphasis flex flex-shrink-0 justify-start p-1 relative w-50% papabear:justify-center papabear:w-auto"> <a class="li-footer__item-link flex items-center font-sans text-xs font-bold text-color-text-low-emphasis hover:text-color-link-hover focus:text-color-link-focus" href="https://www.linkedin.com/legal/copyright-policy?trk=d_learning_course_video_guest_footer-copyright-policy" data-tracking-control-name="d_learning_course_video_guest_footer-copyright-policy" data-tracking-will-navigate> Copyright-Richtlinie </a> </li> <li class="li-footer__item font-sans text-xs text-color-text-low-emphasis flex flex-shrink-0 justify-start p-1 relative w-50% papabear:justify-center papabear:w-auto"> <a class="li-footer__item-link flex items-center font-sans text-xs font-bold text-color-text-low-emphasis hover:text-color-link-hover focus:text-color-link-focus" href="https://brand.linkedin.com/policies?trk=d_learning_course_video_guest_footer-brand-policy" data-tracking-control-name="d_learning_course_video_guest_footer-brand-policy" data-tracking-will-navigate> Markenrichtlinine </a> </li> <li class="li-footer__item font-sans text-xs text-color-text-low-emphasis flex flex-shrink-0 justify-start p-1 relative w-50% papabear:justify-center papabear:w-auto"> <a class="li-footer__item-link flex items-center font-sans text-xs font-bold text-color-text-low-emphasis hover:text-color-link-hover focus:text-color-link-focus" href="https://www.linkedin.com/psettings/guest-controls?trk=d_learning_course_video_guest_footer-guest-controls" data-tracking-control-name="d_learning_course_video_guest_footer-guest-controls" data-tracking-will-navigate> Einstellungen für Nichtmitglieder </a> </li> <li class="li-footer__item font-sans text-xs text-color-text-low-emphasis flex flex-shrink-0 justify-start p-1 relative w-50% papabear:justify-center papabear:w-auto"> <a class="li-footer__item-link flex items-center font-sans text-xs font-bold text-color-text-low-emphasis hover:text-color-link-hover focus:text-color-link-focus" href="https://www.linkedin.com/legal/professional-community-policies?trk=d_learning_course_video_guest_footer-community-guide" data-tracking-control-name="d_learning_course_video_guest_footer-community-guide" data-tracking-will-navigate> Community-Richtlinien </a> </li>  <li class="li-footer__item font-sans text-xs text-color-text-low-emphasis flex flex-shrink-0 justify-start p-1 relative w-50% papabear:justify-center papabear:w-auto"> <div class="collapsible-dropdown collapsible-dropdown--footer collapsible-dropdown--up flex items-center relative hyphens-auto language-selector z-2">  <ul class="collapsible-dropdown__list hidden container-raised absolute w-auto overflow-y-auto flex-col items-stretch z-1 bottom-[100%] top-auto" role="menu" tabindex="-1"> <li class="language-selector__item" role="presentation">  <button aria-label="العربية (Arabisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-ar_AE" data-locale="ar_AE" role="menuitem" lang="ar_AE"> العربية (Arabisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="বাংলা (Bengali)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-bn_IN" data-locale="bn_IN" role="menuitem" lang="bn_IN"> বাংলা (Bengali) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Čeština (Tschechisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-cs_CZ" data-locale="cs_CZ" role="menuitem" lang="cs_CZ"> Čeština (Tschechisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Dansk (Dänisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-da_DK" data-locale="da_DK" role="menuitem" lang="da_DK"> Dansk (Dänisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Deutsch ausgewählt" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link--selected" data-tracking-control-name="language-selector-de_DE" data-locale="de_DE" role="menuitem" lang="de_DE"> <strong>Deutsch</strong> </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Ελανεκα (Griechisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-el_GR" data-locale="el_GR" role="menuitem" lang="el_GR"> Ελανεκα (Griechisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="English (Englisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-en_US" data-locale="en_US" role="menuitem" lang="en_US"> English (Englisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Español (Spanisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-es_ES" data-locale="es_ES" role="menuitem" lang="es_ES"> Español (Spanisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="فارسی (Persisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-fa_IR" data-locale="fa_IR" role="menuitem" lang="fa_IR"> فارسی (Persisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Suomi (Finnisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-fi_FI" data-locale="fi_FI" role="menuitem" lang="fi_FI"> Suomi (Finnisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Français (Französisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-fr_FR" data-locale="fr_FR" role="menuitem" lang="fr_FR"> Français (Französisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="हिंदी (Hindi)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-hi_IN" data-locale="hi_IN" role="menuitem" lang="hi_IN"> हिंदी (Hindi) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Magyar (Ungarisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-hu_HU" data-locale="hu_HU" role="menuitem" lang="hu_HU"> Magyar (Ungarisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Bahasa Indonesia (Indonesisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-in_ID" data-locale="in_ID" role="menuitem" lang="in_ID"> Bahasa Indonesia (Indonesisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Italiano (Italienisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-it_IT" data-locale="it_IT" role="menuitem" lang="it_IT"> Italiano (Italienisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="עברית (Hebräisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-iw_IL" data-locale="iw_IL" role="menuitem" lang="iw_IL"> עברית (Hebräisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="日本語 (Japanisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-ja_JP" data-locale="ja_JP" role="menuitem" lang="ja_JP"> 日本語 (Japanisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="한국어 (Koreanisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-ko_KR" data-locale="ko_KR" role="menuitem" lang="ko_KR"> 한국어 (Koreanisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="मराठी (Marathi)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-mr_IN" data-locale="mr_IN" role="menuitem" lang="mr_IN"> मराठी (Marathi) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Bahasa Malaysia (Malaysisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-ms_MY" data-locale="ms_MY" role="menuitem" lang="ms_MY"> Bahasa Malaysia (Malaysisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Nederlands (Niederländisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-nl_NL" data-locale="nl_NL" role="menuitem" lang="nl_NL"> Nederlands (Niederländisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Norsk (Norwegisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-no_NO" data-locale="no_NO" role="menuitem" lang="no_NO"> Norsk (Norwegisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="ਪੰਜਾਬੀ (Punjabi)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-pa_IN" data-locale="pa_IN" role="menuitem" lang="pa_IN"> ਪੰਜਾਬੀ (Punjabi) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Polski (Polnisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-pl_PL" data-locale="pl_PL" role="menuitem" lang="pl_PL"> Polski (Polnisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Português (Portugiesisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-pt_BR" data-locale="pt_BR" role="menuitem" lang="pt_BR"> Português (Portugiesisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Română (Rumänisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-ro_RO" data-locale="ro_RO" role="menuitem" lang="ro_RO"> Română (Rumänisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Русский (Russisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-ru_RU" data-locale="ru_RU" role="menuitem" lang="ru_RU"> Русский (Russisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Svenska (Schwedisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-sv_SE" data-locale="sv_SE" role="menuitem" lang="sv_SE"> Svenska (Schwedisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="తెలుగు (Telugu)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-te_IN" data-locale="te_IN" role="menuitem" lang="te_IN"> తెలుగు (Telugu) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="ภาษาไทย (Thai)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-th_TH" data-locale="th_TH" role="menuitem" lang="th_TH"> ภาษาไทย (Thai) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Tagalog (Tagalog)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-tl_PH" data-locale="tl_PH" role="menuitem" lang="tl_PH"> Tagalog (Tagalog) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Türkçe (Türkisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-tr_TR" data-locale="tr_TR" role="menuitem" lang="tr_TR"> Türkçe (Türkisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Українська (Ukrainisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-uk_UA" data-locale="uk_UA" role="menuitem" lang="uk_UA"> Українська (Ukrainisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Tiếng Việt (Vietnamesisch)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-vi_VN" data-locale="vi_VN" role="menuitem" lang="vi_VN"> Tiếng Việt (Vietnamesisch) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="简体中文 (Chinesisch vereinfacht)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-zh_CN" data-locale="zh_CN" role="menuitem" lang="zh_CN"> 简体中文 (Chinesisch vereinfacht) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="正體中文 (Chinesisch traditionell)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-zh_TW" data-locale="zh_TW" role="menuitem" lang="zh_TW"> 正體中文 (Chinesisch traditionell) </button> </li>  </ul> <button class="language-selector__button select-none relative pr-2 font-sans text-xs font-bold text-color-text-low-emphasis hover:text-color-link-hover hover:cursor-pointer focus:text-color-link-focus focus:outline-dotted focus:outline-1" aria-expanded="false" data-tracking-control-name="footer-lang-dropdown_trigger"> <span class="language-selector__label-text mr-0.5 break-words"> Sprache </span> <icon class="language-selector__label-chevron w-2 h-2 absolute top-0 right-0" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/cyolgscd0imw2ldqppkrb84vo"></icon> </button> </div> </li> </ul>  </footer> <script src="https://static.licdn.com/aero-v1/sc/h/eh08muqvrde4h3hc6koyij5ti" async></script>  <script src="https://static.licdn.com/aero-v1/sc/h/ek2tdg64hm7rdsrulg3lyo2vc" async defer></script> <script 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