StudyFile:
https://github.com/TonyRenHK/TonyRenHK/blob/master/StudyFile.md
Demo Link:
In this Repo:
http://tonyrenhk.github.io/TonyRenHK/Javascript/Count60S.html
HTML Preview: http://tonyren-dev.github.io/
Your site is published at http://tonyrenhk.github.io/TonyRenHK.