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Respuesta: A. true
true
Una manera adecuada de comprobar que un arreglo es efectivamente un arreglo es usar el constructor Array con su método isArray.
Array
isArray
Como arr es un arreglo (vacío pero arreglo al fin), entonces regresamos true.
arr
Como los arreglos no son un tipo de dato per se en JavaScript, la mejor manera de comprobar si un arreglo es un arreglo es de esta manera.
¿Te cuento un secreto? Esta pregunta es bastante frecuente en entrevistas laborales, pero shhh, no se lo digas a nadie 👀
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Respuesta:
A.
trueUna manera adecuada de comprobar que un arreglo es efectivamente un arreglo es usar el constructor
Arraycon su métodoisArray.Como
arres un arreglo (vacío pero arreglo al fin), entonces regresamostrue.Como los arreglos no son un tipo de dato per se en JavaScript, la mejor manera de comprobar si un arreglo es un arreglo es de esta manera.
¿Te cuento un secreto? Esta pregunta es bastante frecuente en entrevistas laborales, pero shhh, no se lo digas a nadie 👀