Manipulating dates in Javascript without the Date object

It appears I can't use the javascript Date object as it inherintly defaults to US dates when you initialise with a datestring. There is no way of passing any culture information to the date object

I.e. No matter what the clients locale settings are

var d = new Date("08/10/2009") will always create a date object representing the 10th August 2009 rather than the 8th October 2009 if the clie开发者_运维技巧nts locale was the UK.

So given that my requirement is to be able to add/subtract days/months/years easily is there a clever way of doing this easily without the Date object

All i need to do is add a day to a date (or a string representation of a date). so if my code detects the locale setttings are in the US, when it sees a string like "10/08/2009" it whacks it up to "10/09/2009" but if it had detected it was in the UK it would have know it a uk string representation of a date and whacked it up to "09/10/2009"

For date manipulation and localization on JavaScript I always recommend the DateJS library.

This library abstracts the use of Date objects, has a very good localization options, powerful date parsing and formatting, and it also has a very nice fluent API.

If you know you are getting input formatted dd/mm/yyyy you can easily assemble the correct date.

function britDay(D){
 D= D.match(/\d+/g);
 return new Date(+D[2], D[1]-1, +D[0]);
}

toLocaleDateString will return the date in the format expected by the user.

Relying on the user input that obeys particular formatting rules is optimistic- which is why most sites use separate, labeled inputs or select fields for the month, date and year.

You probably know that it's easy to add one day to a date, just add 86,400 * 1000 milliseconds to the date. It sounds like displaying in your locale is the issue; does Date.toLocaleString() not do the right thing for you?

dojo.date.locale.parse will be able to parse a formatted string according the locale of your choice. It has a table of cultural data based off unicode.org/cldr. See this article for more information.