Que me acuerdo de JvaScript
Quiz
•
Computers
•
12th Grade
•
Medium
Josemaría Gª de Polavieja
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. ¿Cómo se declara una variable en JavaScript clásico?
variable x = 5;
let x = 5;
var x = 5;
const x := 5;
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué imprime este código?
var saludo = "Hola";
console.log(saludo + " mundo");
Hola
Hola mundo
saludo mundo
undefined
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué estructura se usa para repetir instrucciones varias veces?
if
else
switch
for
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de estas NO es una estructura condicional?
if
else
switch
repeat
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué hace document.getElementById("demo")?
Borra un elemento del DOM
Busca un elemento con id demo
Crea un nuevo elemento
Cambia el color de fondo
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué significa DOM en JavaScript?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué resultado da este código?
var x = 5;
var y = "5";
console.log(x == y);
false
5
error
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