显示上一周和下一周的日期

Question

I have 2 buttons( Previous and next ) for week. In between the previous and next week button needs to show week ending date (Fridays) for that week. I want to display previous week date from Sun 11/18 to Mon 11/26 when we click the previous week button. Same as the next week button click event to show from Mon 11/26" to Sun 12/2. How it possible to show? and how to take the week ending date (Fridays) for that week?

Answer 1

This's to get the date in 7 days, and from 7 days ago:

var today = new Date();
var nextWeek = Date.parse(new Date(today.getFullYear(), today.getMonth(), today.getDate() + 7));
var previousWeek = Date.parse(new Date(today.getFullYear(), today.getMonth(), today.getDate() - 7));

If you don't want a timestamp returned, remove the Date.parse() from it to receive a string like this:

Mon Dec 03 2012 00:00:00 GMT+0100 (West-Europa (standaardtijd))

(This was returned on a system with Dutch language settings)

To get the week dates, take a look at these 2 questions:
JavaScript - get the first day of the week from current date
How to get first and last day of the week in JavaScript