
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
O que é um array em JavaScript?
Um tipo de dado que armazena um único valor.
Um objeto que armazena múltiplos valores em uma única variável.
Uma função que executa operações matemáticas.
Um método para manipular strings.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a sintaxe correta para declarar um array vazio em JavaScript?
`var meuArray = {};`
`var meuArray = [];`
`var meuArray = ();`
`var meuArray = "";`
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual dos seguintes é um exemplo de array multidimensional?
`var array = [1, 2, 3];`
`var array = [[1, 2], [3, 4]];`
`var array = {a: 1, b: 2};`
`var array = "1, 2, 3";`
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método é usado para adicionar um elemento ao final de um array em JavaScript?
`array.push()`
`array.pop()`
`array.shift()`
`array.unshift()`
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como você acessa o terceiro elemento de um array chamado `meuArray`?
`meuArray[2]`
`meuArray[3]`
`meuArray[1]`
`meuArray[0]`
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método remove o primeiro elemento de um array em JavaScript?
`array.pop()`
`array.shift()`
`array.splice()`
`array.slice()`
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a saída do seguinte código: `var array = [1, 2, 3]; array.length = 0; console.log(array);`?
`[1, 2, 3]`
`[]`
`[0]`
`undefined`
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