JQuery Plugin for Date Manipulation

Question

I am looking for a jQuery utility that will allow me to do date manipulations. for example: 1) Add x no. days to date and get a new date. 2) For this date, the corresponding week of the year is given 3) None. days between two dates 4) Find no. weeks between 2 dates 5) Do not find. months between 2 dates

Is there a jQuery plugin that has these common features built in?

(I'm not looking for any UI plugin)

Thanks.

Answer 1

I suggest DateJS even if it is not a jQuery plugin.