
3TDS - Programação Backend - Aula 12
Authored by JOAO MONTEIRO
Information Technology (IT)
12th Grade
Used 1+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método de array em JavaScript é usado para adicionar um ou mais elementos ao final de um array?
`shift()`
`push()`
`unshift()`
`pop()`
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado o array `const numeros = [1, 2, 3, 4, 5];`, qual será o resultado de `numeros.map(x => x * 2);`?
`[1, 2, 3, 4, 5]`
`[2, 4, 6, 8, 10]`
`[3, 6, 9, 12, 15]`
`[0, 1, 2, 3, 4]`
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método de string em JavaScript é usado para dividir uma string em um array de substrings?
`split()`
`join()`
`slice()`
`concat()`
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método de array em JavaScript é usado para ordenar os elementos de um array?
`filter()`
`map()`
`sort()`
`reduce()`
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado o array `const palavras = ['banana', 'maçã', 'laranja', 'abacaxi'];`, qual será o resultado de `palavras.filter(palavra => palavra.includes('a'));`?
`['banana', 'maçã', 'laranja', 'abacaxi']`
`['banana', 'maçã', 'laranja']`
`['maçã', 'laranja', 'abacaxi']`
`['banana', 'laranja', 'abacaxi']`
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método de array em JavaScript é usado para reduzir um array a um único valor?
`reduce()`
`map()`
`filter()`
`concat()`
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual será o resultado da expressão `['a', 'b', 'c'].join('-');`?
`'a-b-c'`
`['a', '-', 'b', '-', 'c']`
`'abc'`
`'a,b,c'`
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