Add 6 months to the date

@adalbyDec 05.2006

How could I output 6 months out from todays date. Currently the script gives me todays date?

var mydate=new Date()
var theyear=mydate.getYear()
if (theyear < 1000)
theyear+=1900
var theday=mydate.getDay()
var themonth=mydate.getMonth()+1
if (themonth<10)
themonth=”0″+themonth
var theday=mydate.getDate()
if (theday<10)
theday=”0″+theday

var displayfirst=themonth
var displaysecond=theday
var displaythird=theyear

document.dform.currentdate.value=displayfirst+”/”+displaysecond+”/”+displaythird
</script>

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JavaScript

12 Comments(s) _↴

@yellabuffDec 05.2006 — #<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<title>Untitled</title>

</head>

<body>

<form name="dform">

Current Date: <input type="text" name="currentdate" size=11><br>

Future Date: <input type="text" name="futuredate" size=11>

</form>

<script>

var mydate=new Date();

var fdate=new Date();

var daysToAdd = 180; //6 months

var fTime = fdate.getTime()+(daysToAdd*24*60*60*1000);

fdate.setTime(fTime);

document.dform.currentdate.value = formatDate(mydate);

document.dform.futuredate.value = formatDate(fdate);

function formatDate(d) {

var theyear=d.getYear()

if (theyear < 1000) theyear+=1900

var theday=d.getDay()
  var themonth=d.getMonth()+1
  if (themonth<10) themonth="0"+themonth
 
  var theday = d.getDate()
  if (theday<10) theday="0"+theday
 
  var displayfirst=themonth
  var displaysecond=theday
  var displaythird=theyear
 
  return displayfirst+"/"+displaysecond+"/"+displaythird

}

</script>

</body>

</html>

@CharlesDec 05.2006 — #

&lt;script type="text/javascript"&gt;
 
 Date.prototype.addMonths = function (m) {
 var d = new Date (this.getTime())
 d.setMonth (d.getMonth() + m)
 return d
 }
 
 alert (new Date().addMonths(6))
 
 &lt;/script&gt;

@adalbyauthorDec 05.2006 — #Thanks Guys,

is it possible to just add the 6 months onto the months and not actually calculate the days so its always is the same day number but just 6 months ahead?

Thanks!

@CharlesDec 05.2006 — #Thanks Guys,

is it possible to just add the 6 months onto the months and not actually calculate the days so its always is the same day number but just 6 months ahead?

Thanks![/QUOTE]See my example above.

@HDCDec 06.2006 — #Thanks Charles your output is exactly what I want but I've been trying to insert it into a form field like the above example. Instead of an alert I need to write it into a form box.

@CharlesDec 06.2006 — #Something like:

&lt;script type="text/javascript"&gt;
 
 Date.prototype.addMonths = function (m) {
 var d = new Date (this.getTime())
 d.setMonth (d.getMonth() + m)
 return d
 }
 
 onload = function () {document.forms.elements.dateSixMonthFromNow.value = new Date().addMonths(6)}
 
 &lt;/script&gt;

But if you're not going to be more specific than neither am I.

@yellabuffDec 06.2006 — #

[code=html]<html>
 <head>
 <title>Untitled</title>
 <script type="text/javascript">
 Date.prototype.addMonths = function (m) {
 var d = new Date (this.getTime())
 d.setMonth (d.getMonth() + m)
 return d
 }
 
  onload = function () {
   document.dform.currentdate.value = formatDate(new Date());
   document.dform.futuredate.value = formatDate(new Date().addMonths(6));
  }
 
  function formatDate(d) {
   var theyear=d.getYear()
   if (theyear < 1000)	theyear+=1900
 
   var theday=d.getDay()
   var themonth=d.getMonth()+1
   if (themonth<10) themonth="0"+themonth
 
   var theday = d.getDate()
   if (theday<10) theday="0"+theday
 
   var displayfirst=themonth
   var displaysecond=theday
   var displaythird=theyear
 
   return displayfirst+"/"+displaysecond+"/"+displaythird
  } 
  </script>
 </head>
 
 <body>
 <form name="dform">
 Current Date: <input type="text" name="currentdate" size=11><br>
 Future Date: <input type="text" name="futuredate" size=11>
 </form>
 </body>
 </html>[/code]

@WattsDec 06.2006 — #6 months onto the months and not actually calculate the days[/quote]

Just make sure you don't wind up with February 31st or someother type of weirdness.

@mjdamatoDec 06.2006 — #Just make sure you don't wind up with February 31st or someother type of weirdness.[/QUOTE]

Feb 31st would evaluate to March 3rd (or March 4th on a leap year).

@CharlesDec 06.2006 — #Just make sure you don't wind up with February 31st or someother type of weirdness.[/QUOTE]You'll find that my example takes care of that.

@HDCDec 07.2006 — #Perfect guys thank you!

@HDCApr 03.2008 — #Script works great but is it possible to add the 6 months plus the ending day of the month.

Example:

todays date = 4-3-2008

6 month date would be = 10-31-2008

the 31 or end date would replace todays date(3)

Thanks for the help

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