Question

I have this date as string on client side :

var myDate = "08/08/2012";

how can I know if this date is Saturday or not?

Answer 1

You need to turn that string into a javascript date and use the getDay() function which will return a number from 0-6 (Sunday being 0, Monday 1 etc).

For the first part of that, you should split up your string and construct a Date object (Im not sure if your date is dd/mm/yyyy or mm/dd/yyyy and the same will happen on client computers so be specific). The easiest way by far is to use a library such as date.js which would allow you to use code such as

var date = Date.parseExact("8/8/2012", "dd/MM/yyyy");
var isSaturday = (date.getDay() == 6);

One better than that, datejs has some extensions which can make this a one liner:

var isSaturday = Date.parseExact("8/8/2012", "dd/MM/yyyy").is().saturday();