introducción a JavaScript
Quiz
•
Instructional Technology
•
10th Grade
•
Practice Problem
•
Hard
JOS� ARANGO
Used 4+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de las siguientes líneas de código declara correctamente una variable en JavaScript?
var myVar = 10;
myVar := 10;
myVar = 10;
myVar == 10;
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si tienes la variable en JavaScript: var x = 5;
¿Cómo asignarías un nuevo valor de 10 a la variable x?
x + 10;
x = 10;
10 = x;
x += 10;
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de las siguientes expresiones es la forma correcta de multiplicar la variable a por 3 en JavaScript?
a - 3;
a * 3;
a / 3;
a % 3;
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado el siguiente código, ¿Qué se imprimirá en la consola?
var y = 7;
y -= 2;
console.log(y);
7
5
9
"7"
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si tienes la variable num con el valor 20, ¿cómo dividirías num por 4 en JavaScript?
num ÷ 4;
num / 4;
num % 4;
num -= 4;
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dada la siguiente declaración de variables:
var nombre = "María";
var apellido = "Gómez";
¿Cuál sería el valor de la variable nombreCompleto si la siguiente línea de código se ejecutara?
var nombreCompleto = nombre + " " + apellido;
"MaríaGómez"
"María Gómez"
"nombreapellido"
"nombre apellido"
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de las siguientes opciones es la forma correcta de asignar una cadena con comillas simples (') en una variable en JavaScript?
var texto = 'Esto es una cadena';
var texto = "Esto es una cadena";
var texto = 'Esto es una cadena';
var texto = "Esto es una cadena";
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