Diagnóstico Node.js

Quiz
•
Computers
•
Professional Development
•
Hard
Erandi García
Used 14+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la diferencia entre var, const y let?
Ninguna, es una manera moderna de crear variables.
var permite utilizar la variable dentro de la función más cercana, let y const permite utilizar la variable dentro de las llaves más cercanas.
var permite crear variables globales, let y const permite crear variables locales.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuáles son los tipos de datos primitivos de Javascript?
integer, string, boolean, function, array
string, object, null, boolean, symbol, function, number
symbol, number, string, boolean, null, undefined
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuáles son los valores falsos al aplicar un operador lógico?
false, null, undefined
{ }, [ ], false, null, undefined, -1
NaN, null, undefined, "", 0, false
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Las funciones permiten recibir como parámetro funciones y regresar funciones
Verdadero
Falso
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué es el contexto (this) de una función?
Es un objeto global que tiene la referencia de variables y funciones de todo el código.
Es un objeto que hace referencia al objeto más grande que contiene a la función invocada.
Es un objeto que hace referencia al objeto que invoca la función.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Es posible crear objetos utilizando funciones en vez de clases
Verdadero
Falso
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Para qué sirve el destructuring?
Permite eliminar variables para liberar memoria.
Permite extraer variables de las propiedades de un objeto.
Permite eliminar propiedades de un objeto.
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