Please explain this JS code

Question

https://www.sololearn.com/post/149345/?ref=app

Can somebody please explain this JS code to me. Thanks.

Answer 1

Sorry, I don't know what you mean by first answer. I've read all of the answers.

Answer 2

Look at the first answer please 🙄

Answer 3

Programmers are bad at explaining code

Answer 4

??