[SOLVED] Display Today/Next Week algorithm. Can't get it right. HELP!

Question

So I'm making a weekly scheduler and I'm having trouble with these two functions. If I press next_week, it works fine. But if I press next_week > today > next_week, the values for next week doesn't change back to its default. How can I fix this?
https://code.sololearn.com/Wf9E30kRyDpo/?ref=app

Answer 1

1. Part one : Your bug
1.1 Problem : You did not re-initialize the variables.
1.2 Solution :
Declare a function init() in which you initialize the variables.
Call it every time you run nextweek()
https://code.sololearn.com/WqZ7tgxAM8hC/?ref=app
2. Part two : The JavaScript way
Use the Date method now() and Date() constructor.
https://code.sololearn.com/WjOi1iPc9qfg/?ref=app
P. S. I enjoyed Fairytail too.

Answer 2

Gordon, huge thanks man. I only studied JavaScript for a week now. You've been a big help for my project. Thanks again mate! Godbless!
EDIT:
BTW, I fixed it and added a little handy feature to save me some trouble.
https://code.sololearn.com/WB5q8uzRTg4r/?ref=app