Code review: Timestamp Generator

Question

Come try my Timestamp Generator Javascript code and please give me pointers on what to improve :) Thank you
https://code.sololearn.com/W6UXQkoToe7P/?ref=app

Answer 1

You can definitely improve the web layout, design using bootstrap etc.
If you can spare some time, can you please check my only code, and share it to others if you can?
:)