Javascript Variables

Javascript Variables

Professional Development

10 Qs

quiz-placeholder

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Javascript Variables

Javascript Variables

Assessment

Quiz

Information Technology (IT)

Professional Development

Practice Problem

Hard

Created by

Jennifer GOLDFELD

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué es programar?

Jugar a videojuegos en la computadora

Escribir instrucciones para que la computadora haga algo

Dibujar gráficos con código

Crear documentos de Word

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Cuál de estos NO es un tipo de dato primitivo en JavaScript?

Number

String

Object

Boolean

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué valor devuelve typeof(42)?

"number"

"string"

"boolean"

"undefined"

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué tipo de dato tiene la variable let nombre = "Ana";?

boolean

number

string

null

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cuál es el resultado de typeof false?

"true"

"boolean"

"number"

"false"

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué función se usa para pedirle al usuario que escriba algo?

console.log()

alert()

prompt()

typeof()

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué hace la propiedad .length en un string?

Lo convierte en número

Muestra su tipo de dato

Cuenta cuántas letras tiene

Lo pasa a mayúsculas

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