
Revisão JS
Quiz
•
Information Technology (IT)
•
2nd Grade
•
Practice Problem
•
Easy
Deividi Henrique
Used 1+ times
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual é a maneira correta de declarar uma variável em JavaScript?
var myVariable;
variable myVariable;
v myVariable;
myVariable var;
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual palavra-chave é usada para declarar uma variável que não pode ser reatribuída?
var
let
const
static
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual das seguintes opções é uma declaração válida de variável?
let 1stVariable;
let _variable;
let -variable;
let .variable;
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual é o valor padrão de uma variável não inicializada em JavaScript?
null
undefined
0
false
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual é a sintaxe correta para uma estrutura if..else em JavaScript?
if (condition) { } else { }
if condition { } else { }
if (condition) { }
else if { }
if (condition) { }
else if (condition) { }
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
O que será exibido no console?
Maior que 5
Menor ou igual a 5
undefined
Erro
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Qual é a saída do seguinte código?
3
5
10
undefined
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