
Preguntas de JavaScript
Quiz
•
Information Technology (IT)
•
11th Grade
•
Practice Problem
•
Hard
Gabriel Hernandez
Used 6+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la forma correcta de declarar una variable en JavaScript?
let x;
int x;
declare x;
x = var;
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué operador se usa en JavaScript para la asignación de valores?
==
===
=
=>
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué función se utiliza en JavaScript para leer la entrada del usuario?
alert()
prompt()
read()
scan()
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la función correcta para mostrar un mensaje emergente en JavaScript?
Escribir()
write()
alert()
console.log()
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si tienes el siguiente código: let x = 5; x = x + 3; ¿Qué valor tendrá la variable x al final?
3
5
8
15
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cómo puedes declarar una variable constante en JavaScript?
let pi = 3.14;
const pi = 3.14;
var pi = 3.14;
final pi = 3.14;
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué tipo de dato es el siguiente valor? let x = "Hola Mundo";
Número
Booleano
Cadena de texto
Arreglo
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