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WMC - Webprogrammierung und Mobile Computing - 3AHIF - SJ2526

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Was ist das Ergebnis des folgenden Codes?

const numbers = [1, 2, 3, 4];

const sum = numbers.reduce((acc, n) => acc + n, 10); 

console.log(sum);

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Welche Aussage über den Spread-Operator (...) ist richtig?

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Was trifft auf den folgenden Code zu?

const users = [

  { name: "Anna", active: true },

  { name: "Ben", active: false },

  { name: "Clara", active: true }

];

const activeUsers = users.filter(u => u.active === true);

console.log(activeUsers);

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Was gibt filter() zurück?

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Was gibt die Methode find() zurück, wenn kein Element gefunden wird, das dem angegebenen Kriterium entspricht?

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Welche Aussage beschreibt die map()-Methode am besten?

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Welche der folgenden Aussagen trifft auf die Methode some() zu?

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Was macht der Spread-Operator in folgendem Beispiel?

const arr1 = [1, 2, 3];

const arr2 = [...arr1, 4, 5];

console.log(arr2);

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Was gibt folgender Code aus?

const words = ["hi", "hello", "hey"];

const result = words.find(w => w.length > 2);

console.log(result);

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Welche der folgenden Methoden überprüft, ob mindestens ein Element eine Bedingung erfüllt?

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