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Arreglos en JS: Métodos Clave

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Arreglos en JS: Métodos Clave

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About this activity

Quiz sobre métodos de arrays en JS

Created by

Ailin Montero
Ailin Montero
Argentina

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Arreglos en JS: Métodos Clave
 

Arreglos en JS: Métodos ClaveOnline version

Quiz sobre métodos de arrays en JS

by Ailin Montero
1

¿Qué devuelve push() al agregar un elemento a un array existente?

Escoge una o varias respuestas

2

Qué hace pop() en un array?

3

¿Qué efecto tiene shift() en un array?

4

Unshift() añade elementos al...

5

¿Qué propiedad indica cuántos elementos tiene un array?

6

indexOf() devuelve la posición de un valor o -1 si no se encuentra, ¿verdad?

7

includes() verifica si un array contiene un valor, ¿cuál es el resultado correcto?

8

¿Qué hace join() en un array?

9

slice() tiene como función principal:

10

splice() se utiliza para:

Explicación

push añade el elemento al final y devuelve la nueva longitud del array.

pop elimina el último elemento y lo devuelve.

shift elimina el primer elemento y desplaza los demás.

unshift añade al inicio y devuelve la nueva longitud.

length devuelve la cantidad de elementos.

indexOf busca y devuelve la primera posición o -1.

includes devuelve true si se encuentra el valor, sino false.

join une los elementos en una cadena con un separador.

slice devuelve una copia de la porción indicada.

splice puede eliminar e insertar elementos en posiciones dadas.

 
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