
Javascript Variables
Quiz
•
Information Technology (IT)
•
Professional Development
•
Practice Problem
•
Hard
Jennifer GOLDFELD
FREE Resource
Enhance your content in a minute
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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