
Fundamentos de JavaScript
Authored by Takadoshika Takadoshika
Computers
10th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
¿Cuál es la forma correcta de declarar una variable en JavaScript?
variableName = 5;
declare variableName;
let variableName; // o var variableName; o const variableName;
int variableName;
2.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
¿Qué tipo de dato es 'true' en JavaScript?
booleano
objeto
número
cadena de texto
3.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
¿Cuál de los siguientes es un operador aritmético en JavaScript?
- (resta)
* (multiplicación)
/ (división)
+ (suma)
4.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
¿Qué valor representa 'null' en JavaScript?
null representa la ausencia de valor.
null es un valor indefinido.
null representa un objeto vacío.
null es un tipo de dato numérico.
5.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
¿Qué palabra clave se utiliza para declarar una variable que no cambiará su valor?
var
let
const
static
6.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
¿Cuál es el resultado de la expresión 5 + '5' en JavaScript?
10
55.0
55
5 + 5
7.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
¿Qué tipo de dato se obtiene al dividir un número por cero en JavaScript?
NaN
0
Infinity o -Infinity
undefined
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