Why does JS AND CSS use /* Comment goes here. */ ?

Answer 1

Comments are used widely in programming. There are couple of reasons behind this.
1. You write comments in plain English to understand what certain code section does.
2. If certain part of the code is not working properly or you don't wish to completely delete the code, you would like to comment it

Answer 2

This is only for remember of comment it do not.show on page.

Answer 3

it makes reading the code easy for you and for others who read it.