How to correctly display the correct date?

Question

JavaScript

I'm trying to display Sunday by date
For example,
September 16 September
23 September
30

It turns out that if September 16 has come, the date should change to September 23, etc.

Now the countdown is from today plus 7 days
My code is Fiddle

Tell me how to write the condition correctly?

Answer 1

https://jsfiddle.net/jkg2wnh4/17/

date.setDate(date.getDate() + (7 - date.getDay()));

Answer 2

Just like before. Hold LMB on the button for changing the position and select the desired mode. Chrome 42 under Windows.