# Calculate Date Ranges Using Script?

Sep 12, 2011

I'm fairly new to programming in Javascript and quite frankly find it difficult (an old COBOL programmer). My question is this, are their any functions in Javascript that are similar to the VB.Net "DateDiff" function? If not, are their any free code snippets that will calculate the range of days and/or months between 2 date values?

## JQuery :: Calculate Number Of Months Between Date Ranges?

Aug 3, 2010

For a project that would be too hard to explain, I am working with date ranges. There is a begin date and an end date. With those two variables, I need a function to calculate the number of months between both dates. To be more precise, I need a count of all unique month names in the dates (or month numbers if that is easier) where the range includes the beginning date, the end date, and all dates in between. So I am not looking for full months or an approximation. If only, say, one day of a given month is included in the date range, that adds a month. Also the range can span several years, january 2010 and january 2011 need to count for two different months.

## Calculate Age From Date Of Birth And Populate

Apr 9, 2010

I have a form where we are capturing the Members Children information. I want to insert age in years to a field within this table by calculating age from Date of Birth (DOB). DOB format is mm/dd/yyyy and is a datetime data type in SQL. The DOB is added by the member while registering their child. Is there an onchange script that I could use here.

Is it possible to auto populate a field from an other field within the same form? Does anyone have any code samples that I could use?

## List Box Durations To Calculate Date?

Jan 5, 2011

If you take a look at the attached image you will see that the person has the choice of picking a membership duration of 3 months, 6 months, or One Year.The Membership Begin date automatically calculates today's date. I want to be able to have the Membership Ends field correctly give the membership ending date based on what Duration is chosen.Ex. 1/05/11 + 3 Months = 4/05/11Problem: The membership for One Year is value set for 11 because of a discount. I need to add one month to make the date correct.

## Calculate Future Date From Two Fields

Nov 26, 2011

I have a form where I have to calculate a future date (end date) from two fields. First the start date and then the number of months. So if the start date is 1/1/2011 and the months given is 12 then the end date should return as 12/31/2011. I can't figure out why it's not returnign a value.

## Determine Whether Two Time Ranges Overlap?

Oct 7, 2011

When it occurred to me that I needed to calculate this, I knew it was over my head. (although I did come up with what I thought to be a pretty clever solution involving a very complex series of arrays...) So I decided to google it. The trouble is, the solution was a little over my head too... So I hacked away at it for about an hour, and finally it worked, but on closer inspection I had made a typo from the original algorithm.

Is the original algorithm correct, or flawed? is my interpretation correct/flawed, or the same? I'm not really sure what I did here, but after many tests, I think I got the correct solution.

original post on [URL] Let CondA Mean DateRange A Completely After DateRange B (True if StartA > EndB) Let CondB Mean DateRange A Completely Before DateRange B (True if EndA < StartB)

Then Overlap exists if Neither A Nor B is true ( If one range is neither completely after the other, nor completely before the other, then they must overlap)

Now deMorgan's law, I think it is, says that

Not (A Or B) <=> Not A And Not B

Which means (StartA <= EndB) And (EndA >= StartB)

NOTE: This includes conditions where the edges overlap exactly. If you wish to exclude that, change the >= operators to >, and <= to <

And finally the test scenario that I finally got to work:

<input onclick="this.value=''" onkeyup="TEST()" id=inhour1 value=1>
<input onclick="this.value=''" onkeyup="TEST()" id=inminute1 value=1>
<br />
<input onclick="this.value=''" onkeyup="TEST()" id=outhour1 value=2>

[Code]....

## JQuery :: Changing Datepicker's Date Format Of Selected Date From Date Picker

Mar 16, 2011

I am having difficulty trying to change the format of selected date from date picker. This is a test so my code is very simple. Here it is.

[Code]....

## JQuery :: Date Range - Start Date And End Date Text Boxs

Feb 6, 2010

I have a start date and end date text boxs. What I would like to achieve is when a submit button is clicked all the available dates between start and end dates should be displayed together with 3 check boxes next to each date (please see below). I am just wondering whether that'sachievablewith jquery, and if so, how I might be able to implement this.

Start date End date

## Slider With Multiple Handles To Create Multiple Ranges?

Jul 20, 2010

Does anyone know of a Javascript slider that can function like Adobe's gradient creator?I'm not actually making gradients, I just need similar slider capabilities.I have a defined date range, let's say it's January 1 to Januaray 31. I want to make a slider that allows my user to split this date range into multiple ranges. So one person can do:

Jan 1 to Jan 5, Jan 6 to Jan 12, Jan 13 to Jan 31 Another person can do: Jan 1 to Jan 21, Jan 22 to Jan 31. How many regions they create doesn't matter to me. The goal is to pull it off with a Javascript slider that works similar to Adobe's gradient creator. Handle's can be added by clicking and removed by pulling it away from the slider. Handle's can also slide around fairly liberally.

## IE :: Date Loading On A Booking Form - Date Does Not Load On Internet Explorer?

Feb 14, 2011

I have added a booking form to a website with belongs to fastbooking.You can see a temporary website here. http:[url]....It works perfectly fine in Mozilla Firefox, Google Chrome, Opera and Safari but it does not load on Internet Explorer.On the other browsers the form loads todays date and the year is generated but on IE the date stays on 01-01 and no year is generated.I'm using wordpress as a cms.I think the code that is not loading is <body onLoad='start();'>But I'm not sure. The code of the year is

<select name='fromyear' class="input" onChange='update_departure();'>
<option value="0"></option>
</select> But since it's no just the year I assume its the onload code.

<body onLoad='start();' <?php if(function_exists('body_class')) body_class(); ?>>

So now wordpress generates the following code when it loads the page

## Jquery :: Datepicker Date - Show The Date Chosen By The User In A <span> Element With A Particular Format

Aug 31, 2009

I am trying to use the jquey datepicker. I want to show the date chosen by the user in a <span> element with a particular format. However my code maintains the default format. What am I doing wrong?

[Code]..

## Date Format For MySql - Date To Be Saved European Not American

May 26, 2011

We have a little callendar on our website. I have set the format of the date to "dd-mm-y" because I want the date to be saved europian, not american. When comfirming the form, the date is saved as 0000-00-00. The date shows correctly on the form itself. I have two scripts: Calendar.js and Calendar-en-GB.js. Calendar-en-GB.js contains the 'settings'. (Including date format). I can't figure out the problem and thought maybe one of you could. I have uploaded the scripts in one .zip file: [URL]

## Jquery :: Change Date Format To Insert Date In Mysql?

Sep 9, 2010

I want to change date format to insert date in mysql. I tried as below code

<script type="text/javascript">
\$(function() {
\$("#datepicker").formatDate('yyyy-mm-dd');
\$("#datepicker").datepicker();
});
</script>

## JQuery :: Retrieve Date From Database PHP (set Date To Datepicker)?

Aug 5, 2010

I have a problem setting the default date of my jquery datepicker to the date that I retrieved from my database. I'm currently using the jquery datepicker linked to selects/ drop downs. I auto-fill my selects (month, day, year) from an external javascript. (fbDateTime.js)

[Code]...

## Check The Current System Date With Booking Date?

Mar 3, 2011

I want to display the alert when user enters the time less than the system time and date should be current date and if the date is greater than current date it should ignore the alert box. Here is the code

<script type="text/javascript">
function check() {
var now = new Date(),
timeParts = document.contact_form.time.value.split(':'),

[Code]....

## User To Select The Date Using This Dtpicker And The Selected Date?

Oct 14, 2008

Can anybody give me complete code and steps wherein i can implement the dtpicker in only "yyyy-mm-dd" format. i want the user to select the date using this dtpicker and the selected date should show in the textbox on the form.

## Date D-m-yy To Dd-mm-yyyy - Convert The Given Date Into Desired Format

Aug 19, 2009

My question is.. I have one text box there user types the date as follows (d-m-yy) 5-4-09 or 15-3-94 how can i convert them into exact (dd-mm-yyyy) 05-04-2009 or 15-03-1994 is there any 'javascript' code to convert the given date into my desired formt...

## Date And Time - Showing Date 90 Days Later

Jul 23, 2005

Say I put a date and time for like this: Jun-15-04 21:52:06. Here is the form I am using:

<form>
<p><input type="text" name="T1" size="20"><br>
date</p>
<p><input type="text" name="T2" size="20"><br>
90 days from date</p>
<p><input type="submit" value="Submit" name="B1"></p>
</form>

How could I get to show the date 90 days later to the exact date and time. I would enter the data in the first box and hit submit to show in the second box.

## Webpage - Set The Date 6 Days Before The Current Date?

May 10, 2010

I'd like to insert a date on a webpage in the following format: Monday, May 10, 2010 However, I want to be able to set the date 6 days before the current date. So, if today's date is Monday, May 10, 2010, I want it to instead display the following: Tuesday, May 4, 2010

## Date Calculation - Change The Date Formats?

Jul 8, 2010

I've inherited a Form which calculates a future date based on a calculation and then inserts today's date and the future date into a database. The day part of the date is formatted as a number. This is fine, but up to 9 the numbers display in single figures with no leading zeros. I want them to display leading zeros (e.g. 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11... 30, 31) So;

1/12/2010 is NOT wanted
01/12/2010 IS wanted

The inherited code originally set the Month names as "Jan", "Feb" etc, and it was easy to kludge these to 01, 02... 12, but I suspect there's a more elgant solution to this as well, this bit of the code works so it's not as vital to neaten this but my database needs dd/mm/yyyy format (it's a third party email program).

</script>
<script type="text/javascript">
var todaysDate = new Date();
function updateExpiryDate(){

[code].....

## Date Math - Date In Past Plus 14 Days?

Dec 14, 2010

Not sure if this is possible in javascript: I'm looking for two different dates (bill date and due date) on an invoice that are captured by OCR. If one of them exists, but the other does not, I want the empty field to be 14 days before (or after) the other.

For example if the bill date is 7/27/2010 and the due date was not captured, I want to set the due date as 8/10/2010 (14 days after the bill date). If the due date was captured as 8/10/2010, but the due date is blank, I want to assign the bill date as 7/27/2010 (14 days before the due date).

## Date Comparison Based On Selected Date

Jan 13, 2011

I have a drop down menu where people can select a month, day and year. Based on their selection, I want to show them an image.

If their selection is >= July 26, 2010 but <= July 25, 2011, show the red image;
If their selection is >= July 26, 2011 but <= July 25, 2012, show the white image;
If their selection is >= July 26, 2012 but <= July 25, 2013, show the blue image;
If their selection is >= July 26, 2013 but <= July 25, 2014, show the yellow image;

I don't know how to compare a selected date to a range of dates like this.

## Check Whether The Second Date Either Equals Or Is After The Outbound Date?

Dec 2, 2010

im doing a web page to order train tickets, and i have 2 text boxes where the user inputs a outbound date and a return date if applicable what i want is to check whether the second date either equals or is after the outbound date! im doing it in javascript

## Add Date Script But Few Days Before The Actual Date?

Jun 23, 2009

What I am wanting to do is have a date script on my page but have the date actually be a few days before the actual date. Can I do this and how would I? Heres the javascript I have right now

[Code]...

## Date Picker With Disabled Past Date?

May 4, 2010

I am trying to make a date picker that will disallow user from selecting the date that has past (i.e. can't select yesterday's date). Here is my original script for the calendar but it allows user to select past date.

Code:
var datePickerDivID = "datepicker";
var iFrameDivID = "datepickeriframe";

[code]....

## Date Range For Date Function

Jul 23, 2005

What is the maximum valid date range for the date(yyyy,mm,dd) function.