3TDS - Programação Backend - Aula 15

Quiz
•
Information Technology (IT)
•
12th Grade
•
Hard
JOAO MONTEIRO
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método JavaScript é usado para criar um novo array com todos os elementos que passam em um teste implementado por uma função fornecida?
`map()`
`filter()`
`reduce()`
`forEach()`
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a finalidade do método `reduce()` em JavaScript?
Clonar arrays
Filtrar elementos de um array
Reduzir um array a um único valor
Remover duplicatas de um array
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado o array `const numeros = [1, 2, 3, 4, 5];`, qual expressão usaria o operador spread para clonar este array?
`const clone = numeros;`
`const clone = [...numeros];`
`const clone = numeros.slice();`
`const clone = Array.from(numeros);`
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método JavaScript pode ser usado para garantir a unicidade dos elementos em um array?
`Set`
`Map`
`Array`
`Object`
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a saída do seguinte código: `const resultado = [1, 2, 3].reduce((acc, val) => acc * val, 1);`?
`6`
`1`
`0`
`9`
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