Fundamentos de JavaScript

Fundamentos de JavaScript

10th Grade

10 Qs

quiz-placeholder

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Fundamentos de JavaScript

Fundamentos de JavaScript

Assessment

Quiz

Computers

10th Grade

Practice Problem

Easy

Created by

Takadoshika Takadoshika

Used 1+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 20 pts

¿Cuál es la forma correcta de declarar una variable en JavaScript?

variableName = 5;

declare variableName;

let variableName; // o var variableName; o const variableName;

int variableName;

2.

MULTIPLE CHOICE QUESTION

30 sec • 20 pts

¿Qué tipo de dato es 'true' en JavaScript?

booleano

objeto

número

cadena de texto

3.

MULTIPLE CHOICE QUESTION

30 sec • 20 pts

¿Cuál de los siguientes es un operador aritmético en JavaScript?

- (resta)

* (multiplicación)

/ (división)

+ (suma)

4.

MULTIPLE CHOICE QUESTION

30 sec • 20 pts

¿Qué valor representa 'null' en JavaScript?

null representa la ausencia de valor.

null es un valor indefinido.

null representa un objeto vacío.

null es un tipo de dato numérico.

5.

MULTIPLE CHOICE QUESTION

30 sec • 20 pts

¿Qué palabra clave se utiliza para declarar una variable que no cambiará su valor?

var

let

const

static

6.

MULTIPLE CHOICE QUESTION

30 sec • 20 pts

¿Cuál es el resultado de la expresión 5 + '5' en JavaScript?

10

55.0

55

5 + 5

7.

MULTIPLE CHOICE QUESTION

30 sec • 20 pts

¿Qué tipo de dato se obtiene al dividir un número por cero en JavaScript?

NaN

0

Infinity o -Infinity

undefined

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