Date comparison question.

[JohnnyBGoode]

I have a date variable. First of all, it probably need to be formatted in some way before the comparison is done.

How can I compare a date parameter (temp_date) to see if it is earlier or later than the current date?

 

[kaht]

If you have the date you wanna compare in string format, you can make it into a Date object like so:

var str = '03/09/2004';
var dte = new Date();
dte.setTime(Date.parse(str));

Take the date that you wanna compare and pass it to this function. It will return true if it's greater, and false if not.

function compareDates(dte) {
   var today = new Date(); //today's date
   if (dte.getTime() > today.getTime()) {
      alert("Date is greater than today");
      return true;
   }
   else {
      alert("Date is not greater than today");
      return false;
   }
}

-kaht

 

[JohnnyBGoode]

Thanx, that's perfect!

 

[JohnnyBGoode]

Actually, one more question. Is there a way to subtract a day from a date? For instance, if I have the variable "dte" (as above), how can I subtract one day from it and get the previous days date? "dte" is already a valid dateTime format.

 

[JohnnyBGoode]

I found something that works. It may not be the best solution, but the following will subtract one day from a date variable:

strDate.setUTCDate(strDate.getUTCDate()-1);

More of an FYI. Thanx.