
1DAT - JavaScript
Authored by TATIANE TONET LUGLI
Computers
11th Grade
10 Questions

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual dos seguintes é um tipo de dado primitivo em JavaScript?
Array
String
Objeto
Função
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a saída do seguinte código JavaScript? ```javascript console.log(typeof undefined); ```
"null"
"object"
"undefined"
"string"
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como você declara uma função chamada "soma" que recebe dois parâmetros e retorna a soma deles?
`function soma(a, b) { return a + b; }`
`soma = function(a, b) { a + b; }`
`function soma(a, b) { a - b; }`
`function soma(a, b) { return a * b; }`
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das opções abaixo cria um array com três elementos em JavaScript?
`let arr = (1, 2, 3);`
`let arr = [1, 2, 3];`
`let arr = {1, 2, 3};`
`let arr = "1,2,3";`
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado o objeto abaixo, como acessar o valor "azul"? ```javascript let carro = { cor: "azul", modelo: "sedan" }; ```
`carro[0]`
`carro.cor`
`carro("cor")`
`carro->cor`
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o resultado da expressão abaixo? ```javascript let x = [1, 2, 3]; console.log(x.length); ```
2
3
1
0
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das alternativas representa corretamente uma função anônima atribuída a uma variável?
`let f = function(x) { return x * 2; };`
`let f(x) = { return x * 2; };`
`function f(x) { return x * 2; }`
`let f = function: (x) { return x * 2; };`
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