Interest compounding starting at a certain date

Thanks guys! It makes pretty good sense.

The audience is mostly going to be in a specific timezone, so I don't think that would make a big difference. Otherwise, how would I grab it from a server in, say, Central Time?

I just found out that, fortunately, the dollar figure I need to add has already been compounded for interest and therefore the calculation wouldn't be too hard. It would just be initial figure + (number of seconds * figure per second) and it would stay like that for the duration of the app. No need to compound the daily interest every 24 hours or hourly or (eek!) every second. Whew.

Thanks again!

Napo

use:

var startDate:Date = new Date(2010,0,14);  // use your startyear, startmonth, startdate in the new Date() parameters.
var currentDate:Date = new Date();  // assuming user's clock is correct and in your timezone (which is pretty unlikely).  else use server date/time.
var numberOfSeconds:Number = (currentDate.getTime()-startDate.getTime())/1000;

To get the number of seconds since a date just make two date objects like startDate and nowDate and then subtract to get milliseconds and divide by 1000 to get seconds:

var startDate:Date = new Date(2010, 0, 5); //january 5th

var nowDate:Date = new Date();

trace((nowDate - startDate) / 1000);