# Calculating Difference Between Two Dates Using JS

Nov 10, 2006

I have two date fields (check in, check out) and "number of days"
field.

I want the script to calculate automatically the difference.
For example: I have defaults dates, and I want the script to put the
difference in "number of days" field. And if the user will change the
date, the number of days will change automatically.

## Calculating Difference Between The Two Numbers?

Jul 2, 2009

the following javascript is not calculating the difference between the two numbers.cant understand y

<script language="JavaScript" type="text/javascript">
function showAmt(){
total = document.total.value;[cod

## Getting The Difference Of Two Dates?

May 1, 2010

Here is my problem, I am trying to get the difference of two different date. I want to get how much hour and second is their different. My problem is the 1st date is using a different format this is the example:2010-05-01 13:46:04 the second one is I am trying to get the today's time and date by using this code: "currentTime.getTime()". Here is my whole code

[Code]...

## Difference Between Two Dates?

Jun 1, 2009

I would like to know how to achieve this. I want to know the difference between two dates in months, how much days left over, and how much hours left over. I do not need days or hours equivalent to the months remaining. The problem is I also want it to consider February's less than 30 days and 29 days in leap year. I spend my entire week trying to figure out how to do it.

In the end I want values in variable months_left, days_left, and hours_left. I tried modifying several date deference scripts but I couldn't get them to work as intended.

## Calculate Difference In Dates

Jul 23, 2005

For my website i would like to display the age of my son in years,
months, days and hours.

For now i manage to get a result for totals. Like the total number of
days.

This is the beginning:

starttime = Date.parse("Aug 10,2003, 07:07")
sdt = new Date(starttime)
starttime= Math.ceil((starttime) / 1000 / 60 / 60 / 24 )
ndt = new Date()

y = sdt.getYear()
m = sdt.getMonth() + 1
d = sdt.getDate()
h = starttime

## Getting The Date Difference Between 2 Dates?

May 25, 2011

How do I get the difference in days between 2 dates using Javascript?

## Calculate Difference Between Two Dates?

Mar 5, 2011

Calculating the difference between two dates in JavaScript is relatively straightforward, provided you choose the right Date methods to work with. Whichever way you get there. code...

## Finding Difference Between Dates

Jul 23, 2004

Code:
<script language = 'JavaScript'>
<!--
function checkDate()
{ var d1, d2
d1 = new Date(document.form1.date1.value)
d2 = new Date(document.form1.date2.value)

if (d2.getTime() < d1.getTime()) {
window.alert ("The end date can not be before the start date.")
return false } else { return true }
}
//-->
</script>
, where date2 is the end date and date1 is the start date.

& then I have put
PHP Code:

<form name='form1' action="<?=\$_SERVER['PHP_SELF']?>" ONSUBMIT = 'return checkDate()' method="post">

Each time I am doing submit, it is directly going to the alert, without checking the condition?

## Working Out The Difference Between Two Dates?

Nov 11, 2009

I am having trouble working out the difference between two dates.

[Code]...

This gives a value of 2,678,400,000 but the amount of milliseconds in a day is actually 86,400,000

## Calculate The Difference In Two Dates That Are In Different Formats?

Jun 17, 2010

How can you calculate the difference in two dates that are in different formats?

I have one date as: '2010-06-16 21:20:44.000'

and the other date as now = new Date();

I want to subtract the dates to see if it is over 30 days.

## Js Function To Find The Difference Between Two Dates?

Apr 5, 2011

i've written a js function to find the difference between two dates. the format being used is dd/mm/yyyy hh:mm. The function returns correct value when give one set of values, but go wrong with another set. examples are given below.

set 1 : Time 1 = 24/02/2011 09:30 , time 2 = 24/02/2011 16:00

Output is corret here. It gives 6 Hours & 30 Minutes (after converting the difference)

set 2: Time 1 = 24/02/2011 09:30 , time 2 = 25/02/2011 16:00

Here, it gives 31 days, 6 Hours & 30 Minutes. My code is given below. Also the alert of dates display strange values. Don't know if it is timezone issue.

function compareDateTime(frmtime,totime)
{
var date1 = new Date(frmtime);
var date2 = new Date(totime);[code]......

## JQuery :: Calendar To Get Difference Between Two Dates And Split Up Variables

Oct 5, 2011

I'm working on redesign of a vacation rental company web site, and I'm looking to use a drop down calendar to select the arrival/departure date on the search form. getting the number of nights difference between dates (though I think the code/labels are slightly backward in that example), but I don't know where to start to split off the variables I need. Basically, the search.php file I'm passing the variables to need to be in this format:

Code:
search.php?month=(arrival month digit)&day=(arrival day digit)&year=(arrival year, 4 digits)&days_count=(number of nights)(...plus some other variables...)

how to split things off properly and get a properly formatted URL? I'll experiment a bit, and come back here with sample code

## Get A Date And Time Picker That Will Only Allow To Choose Current Dates Instead Of Past Dates?

Aug 30, 2010

where I can get a Date and Time Picker that will only allow to choose current dates instead of past dates written in Javascript or JQuery?

Mar 1, 2010

i have a table, with 2 numeric values at the minute, if the checkbox is selected I want the total price to be shown? this is the form I have with the numeric values

<form id="calculation" action="#" method="post">
100 <input type="checkbox" name="check1" value="100" onClick='total_cost()'/>
120 <input type="checkbox" name="check2" value="200" onClick='total_cost()'/>[code].....

## Calculating A Person's Age?

Dec 1, 2010

I am trying to write a script that will take a date of birth and another date and, if the person was over 75 years old on the createdDate, return "true" (otherwise return "false").

Unfortunately my code doesn't seem to return either 'true' or 'false'!

The code is:

var dateofBirth="30/10/1982";
var createdDate="01/12/2010";
var sd = dateofBirth.split('/');
var dob = new Date(sd[2],sd[1],sd[0]);

[Code]....

Jul 23, 2005

I want to create a link that a user can click which will create a popup
telling the user their ip address. I have:

but this does not seem to work. It says the ip is 127.0.0.1. Strangely,
this piece of code used to work but all of a sudden it doesn't for some
unknown reason. Can anyone tell me what's wrong with the above code?

## Calculating Age From Date Of Birth?

Jul 11, 2009

I am using date of birth field in my application and i m taking date of birth in yyyy-mm-dd format.

I need to calculate age by using this date of birth and should show alert if age is less than 5 years.

## Calculating Shipping With If/else And Function?

Sep 21, 2009

I am having difficulty getting the following assignment to run properly:Many companies charge a shipping and handling charge for purchases. Create a Web page that allows a user to enter a purchase price into a text box and includes a JavaScript function that calculates shipping and handling. Add functionality to the script that adds a minimum shipping and handling charge of \$1.50 for any purchase that is less than or equal to \$25.00.For any orders over \$25.00, add 10% to the total purchase price for shipping and handling,but do not include the \$1.50 minmum shipping and handling charge. The formula for calculating a percentage is price * percent / 100. For example, the formula for calculating 10% of a \$50.00 purchase price is 50 * 10 / 100, which results in a shipping and handling charge of \$5.00. After you determine the total cost of the order (purchase plus shipping and handling), display it in an alert dialog box. Save the document as CalcShipping.html.This is what I have after working on it round and round for 4 hours yesterday:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">[code].....

## Auto Calculating Form

Mar 22, 2007

I've been googleing for a auto calculating form and found nothing, I just want something .. some form, that can add values from different fields ... and make a sum .. in real time ... meaning that ... if I put X value in field #1 and Y value in field #2, at the bottom or somewhere I should have the X+Y value :P..

## Calculating Textbox Value For Html?

Mar 6, 2010

calculating textbox value from java script for html

Example: (textbox1value X textbox2value) + (textbox3value + textbox4value)= result

where result value should display in textbox5

## Calculating The Average/mean In An Array ?

Mar 30, 2011

Im trying to calculate the mean/average of numbers in an array.how can i get the length of an array to perform in a simple / maths problem whilst being flexiable to the length of the array?

function sum()
{
var i=0 [code].....

## Calculating Percentage In A Form?

Mar 23, 2010

I am writing a form and doing a bunch of calculations one of which is a percentage based on the value selected. I am returning a correct result for two of the values but for the other two I am not.The 'discount' value is what I am looking for. It should return as 0 for values of 1 but it is doing the math as though it is multiplying by 1. And again for the value of 6 it should be 10% but is taking the value as 4.6 or something.Code is below I've included all of it (sorry) for better ease of understanding the math that is happening:

HTML Code:

<form id="form1" action="" method="get">
<fieldset>
<p>[code]......

## Calculating Possible Routes Between Two Points

Oct 18, 2011

I am not a developer so not so familiar with javascript. Suppose I have a map with ten junctions and based on that map. I need to calculate all the possible routes between one junction to another. How do I represent the map in javascript and how do I code the function to calculate all the possible routes?

## Calculating Amount Of Time?

Nov 15, 2011

I was wondering if it is possible to figure out the amount of time passed from a specific time in history till the present? If so how? I have tried so many different things and I am not getting the right returns.

## Calculating The Scroll Area?

Jun 19, 2009

I am writing a DHTML application which uses AJAX to show dialogue windows etc.. (all the bells and whistles).When I display a DHTML dialogue in the foreground, I use JS to create a div which is a "layer" in between the foreground and the background which essentially "darkens" the background and disables all background functionality. Forcing the user to take action in the dialogue.How do I get the total scrollable area of the page so I know how big to make the "dark" div?I have tried all of these:

document.body.scrollWidth
document.body.scrollHeight
document.body.offsetWidth

[code]...

They all work in one browser or another, (I am testing in IE, FF and Opera) but none of them give me the correct values for the exact scrollable area of the page.

## Calculating A Score From A Row Of Drop-down Values

Aug 11, 2006

I need help in calculating a score from a row of drop-down values.
I need to use the onChange to tally the score as the user moves across
9 categories (with drop-down selection of 1-9 or N/A) multiplied by a
weighted score. The final column for each employee would be the
calculated score. I know how to accomplish this with vbscript but I
need it to process on the screen so the user can see the calculated
score as they make selections. Also the code needs to execute as many
times as there are employee rows.(loop) I don't know how to do this
with Javascript

Here's the VBscript with the variables involved
Var S1 = Category 1 Weighted score
Var S2 = Category 2 Weighted score
Var S3 = Category 3 Weighted score
Var S4 = Category 4 Weighted score
Var S5 = Category 5 Weighted score
Var S6 = Category 6 Weighted score
Var S7 = Category 7 Weighted score
Var S8 = Category 8 Weighted score
Var S9 = Category 9 Weighted score
D5 = 0.92
Var Q11 = Category 1 drop-down Value(1-9) * S1
Var Q22 = Category 2 drop-down Value(1-9) * S2
Var Q33 = Category 3 drop-down Value(1-9) * S3
Var Q44 = Category 4 drop-down Value(1-9) * S4

If (Category 5 Value = "N/A") THEN
Q55 = ' '
Else
Var Q55 = Category 5 drop-down Value(1-9 or N/A) * S5
End If

Var Q66 = Category 6 drop-down Value(1-9) * S6
Var Q77 = Category 7 drop-down Value(1-9) * S7
Var Q88 = Category 8 drop-down Value(1-9) * S8
Var Q99 = Category 9 drop-down Value(1-9) * S9

If (Category 5 = "N/A") THEN
Var FinalScore = round(((Q11 + Q22 + Q33 + Q44 + Q66 + Q77 + Q88 + Q99)
/ D5),2)
else
Var FinalScore = round((Q11 + Q22 + Q33 + Q44 + Q55 + Q66 + Q77 + Q88 +
Q99),2)
end if

Can anyone help me converting this to javascript?