Send reminder 30 days before expire date?

Question

Hi, I hope someone can help me with that.
I am getting in an "expireDate" from a Database.
It can be for ex. "5/21/2007" . This date is a String.
30 days before that expireDate is reached, I want to send a
reminder to the client, like
"your membership is going to expire".
How can I find the date ! 30 days before it expires?
Best regards,
Luciewong

Answer 1

Hi, to All,
unfortunately still I could not get the solution for my
problem.
I have 2 strings coming in from a Database.
todayDate = "9/7/2006";
expireDate = "4/20/2007";
// now, I could find the difference in months with the code
below>
aDate = todayDate;
bDate = expireDate;
TimeUsed.text =
monthsBetween(toDate(aDate),toDate(bDate));//<<will be "7"
function toDate(str){
var d_arr = str.split('/');
return new Date(d_arr[2],d_arr[0],d_arr[1]);
//xxx
function monthsBetween(d1,d2){
var d_date = new Date(d1.valueOf());
var t_date = new Date(d2.valueOf());
var m = -1;
//xxx
while(d_date<=t_date){
//xxx
d_date.setMonth(d_date.getMonth()+1);
m++;
return m;
//xxx
//This will return me the difference between the 2 date
strings in months, great, but can I get the d a y s between??
Thank you for your help.
Luciewong