Bug with the delete keyword :-
It deletes the elements value but never deletes the memory occupied that's why length is the same

To find the index of an array in javascript we have FindIndex();

If the index is not available we will get -1 as an index (written interview question )

Do vote 😊😊

Programmer Presents 2022
http://www.i-programmer.info/news/99-professional/15884-programmer-presents-2022.html

As the holiday season approaches, what can you get the programmer who has everything? How about some festive wear? A garment with a geeky message might seem predictable, but we found several that made us chortle, including Clippy making a comeback on a really ugly sweater.

Read more... (http://www.i-programmer.info/news/99-professional/15884-programmer-presents-2022.html)