
Quiz sobre JavaScript para 9º Ano
Authored by LEANDRO CARDOSO
Information Technology (IT)
9th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a sintaxe correta para declarar uma variável em JavaScript?
`var nome = "João";`
`variable nome = "João";`
`v nome = "João";`
`declare nome = "João";`
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como você cria uma função em JavaScript?
`function minhaFuncao { }`
`function minhaFuncao() { }`
`func minhaFuncao() { }`
`createFunction minhaFuncao() { }`
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o resultado de `2 + "2"` em JavaScript?
`4`
`22`
`NaN`
`undefined`
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a saída do seguinte código? ```javascript let x = 5; if (x > 3) { x = 10; } console.log(x); ```
`3`
`5`
`10`
`undefined`
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a diferença entre `let` e `var` em JavaScript?
`let` tem escopo de função, enquanto `var` tem escopo de bloco.
`let` tem escopo de bloco, enquanto `var` tem escopo de função.
Não há diferença.
`let` é usado para constantes, enquanto `var` é usado para variáveis.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como você chama uma função chamada `minhaFuncao` em JavaScript?
`call minhaFuncao();`
`minhaFuncao();`
`execute minhaFuncao();`
`run minhaFuncao();`
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a saída do seguinte código? ```javascript function soma(a, b) { return a + b; } console.log(soma(2, 3)); ```
`2`
`3`
`5`
`undefined`
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