jQuery Plugin to perform Date manipulations

Question

Am looking for a jQuery utility that will let me do date manipulations. eg: 1) Add x no. of days to a date and get a new Date. 2) For given a date, gives the corresponding week of the year 3) Find no. of days between 2 dates 4) Find no. of weeks between 2 dates 5) Find no. of months between 2 dates

Is there a jQuery plugin that has these generic functions built in ?

(Am not looking for any UI plugin)

Thanks.

Answer 1

I suggest DateJS even if it's not a jQuery plugin.