https://www.todojs.com/casos-especiales-undefined-null-y-nan/
https://appdividend.com/2022/07/04/javascript-null-undefined-and-nan/
Nan, null y undefined
Publicado por
https://www.todojs.com/casos-especiales-undefined-null-y-nan/
https://appdividend.com/2022/07/04/javascript-null-undefined-and-nan/