Calculate difference between two calendar dates in javascript - javascript

I need to calculate difference between two calendar dates. I have gone through various posts but the value returned is not correct.
Heres' my code:-
function getTotalDays()
{
var date11 = document.getElementById("departure_date").value;
var date22 = document.getElementById("arrival_date").value;
var one_day=1000*60*60*24;
var date1 = new Date(date11);
var date2 = new Date(date22);
// Convert both dates to milliseconds
var date1_ms = date1.getTime();
var date2_ms = date2.getTime();
// Calculate the difference in milliseconds
var difference_ms = date2_ms - date1_ms;
// Convert back to days and return
var diffDays = Math.round(difference_ms/one_day);
alert(diffDays);
}
suppse the difference is 2 days its showing as 59.
What's wrong..??

The values you are passing to the date object are likely wrong. Its probably easier for you to do something like this:
var date1 = getDate(date11);
var date2 = getDate(date22);
with getDate being:
function getDate(date) {
//date format dd/mm/yyyy
var dateArr = date.split('/');
var date = new Date(dateArr[2], dateArr[1], dateArr[0]);
return date;
}

Related

How to get the days difference of two xs.date in MarkLogic?

What is the appropriate function for getting the days (numeric) difference between two xs.date type?
var date1 = new Date();
var date2 = new Date();
date1 = xs.date("2018-03-29");
date2 = xs.date("2018-04-15");
I tried using fn.daysFromDuration function (see sample below), but it is not returning a numeric value which represents the days difference. It is returning a xs.dayTimeDuration:
var dateDiff = new Date();
dateDiff = fn.daysFromDuration(date2 - date1);
You can't use date2 - date1 to calculate the difference between dates and yield a xs.dayTimeDuration in JavaScript, like you can in XQuery.
In an SJS module, use the xs.date.subtract() from the xs.date object, then you can use fn.daysFromDuration() to obtain the number of days as a number:
const date1 = xs.date("2018-03-29");
const date2 = xs.date("2018-04-15");
fn.daysFromDuration(date2.subtract(date1));

how to insert current date in html script

I have the current script. var date 2 needs to automatically grab the current date and then do the calculation. I have tried many things with no luck, please help.
<script>
// Here are the two dates to compare
var date1 = '2015-09-08';
var date2 = '2015-12-13';
// First we split the values to arrays date1[0] is the year, [1] the month and [2] the day
date1 = date1.split('-');
date2 = date2.split('-');
// Now we convert the array to a Date object, which has several helpful methods
date1 = new Date(date1[0], date1[1], date1[2]);
date2 = new Date(date2[0], date2[1], date2[2]);
// We use the getTime() method and get the unixtime (in milliseconds, but we want seconds, therefore we divide it through 1000)
date1_unixtime = parseInt(date1.getTime() / 1000);
date2_unixtime = parseInt(date2.getTime() / 1000);
// This is the calculated difference in seconds
var timeDifference = date2_unixtime - date1_unixtime;
// in Hours
var timeDifferenceInHours = timeDifference / 60 / 60;
// in weeks :)
var timeDifferenceInWeeks = timeDifferenceInHours / 24/7;
document.write(Math.ceil(timeDifferenceInWeeks));
</script>
You can use new Date() to get current date. please refer snippet.
<script>
// Here are the two dates to compare
var date1 = '2015-09-08';
var date2 = '2015-12-13';
// First we split the values to arrays date1[0] is the year, [1] the month and [2] the day
date1 = date1.split('-');
date2 = date2.split('-');
// Now we convert the array to a Date object, which has several helpful methods
date1 = new Date(date1[0], date1[1]-1, date1[2]);
date2 = new Date(date2[0], date2[1]-1, date2[2]);
// We use the getTime() method and get the unixtime (in milliseconds, but we want seconds, therefore we divide it through 1000)
date1_unixtime = parseInt(date1.getTime());
date2_unixtime = parseInt(date2.getTime());
date3_unixtime = parseInt((new Date()).getTime());
// This is the calculated difference in seconds
var timeDifference = date2_unixtime - date1_unixtime;
var timeDifferenceInWeeks1 = timeDifference / (1000*60*60*24*7);
var timeDifferenceInWeeks2 = (date3_unixtime - date2_unixtime) / (1000*60*60*24*7);
document.write(Math.ceil(timeDifferenceInWeeks1)+'--'+Math.ceil(timeDifferenceInWeeks2));
</script>
just use
var date2 = new Date();
now the date2 holds the current date and time from your machine.
I changed to a php code and the following is what I got to work.
<?
$strtDate = '2015-09-08';
$endDate = date('Y-m-d');
//$endDate = 'new Date();';
$startDateWeekCnt = round(floor( date('d',strtotime($strtDate)) / 7)) ;
// echo $startDateWeekCnt ."\n";
$endDateWeekCnt = round(ceil( date('d',strtotime($endDate)) / 7)) ;
//echo $endDateWeekCnt. "\n";
$datediff = strtotime(date('Y-m',strtotime($endDate))."-01") - strtotime(date('Y-m',strtotime($strtDate))."-01");
$totalnoOfWeek = round(floor($datediff/(60*60*24)) / 7) + $endDateWeekCnt - $startDateWeekCnt ;
echo $totalnoOfWeek ."\n";
?>

Jquery get age by input value

How do I calculate the age of a user, depending on the date entered in a textbox?
I want to be able to calculate the exact age of YYYY/MM/DD, so far I've only managed to do it by year.
The code I've tried so far:
function OnClick() {
var txtDate = $("#txtDate").val();
var date1 = new Date();
date1.setFullYear(txtDate);
var d1 = date1.getFullYear();
var date2 = new Date();
var d2 = date2.getFullYear();
var age = d2 - d1;
document.getElementById("Diven").innerHTML = age;
}
Any ideas?
When you set the date using this: new Date(birthYear, birthMonth, birthDay); you need to subtract 1 from the month. Months are counted from 00.
For example,
var testDate = new Date(1988,10,12) is Sat Nov 12 1988 00:00:00
You can try this alternate way:
var today = new Date();
var inputBirthDate= new Date(birthYear, birthMonth - 1, birthDay);
var age = today.getFullYear() - inputBirthDate.getFullYear();
var month = today.getMonth() - inputBirthDate.getMonth();
if (month < 0 || (month === 0 && today.getDate() < inputBirthDate.getDate())) {
age--;
}
console.log(age);
This will return you the correct age based on input birth date.
well since i can't make comment, im gonna do it here.
first thing i would do is use momentjs for every date releated thing in js
and if i understand your right, you want something like this?
How to get difference between 2 Dates in Years, Months and days using moment.js
You can use Math.floor and the modulo operator % for integer division:
function CalculateAge() {
var dob1 = $("#txtBirthday").val();
var age1 = document.getElementById("#age");
var dateAry = dob1.value.split("/");
var birthDay = parseInt(dateAry[0]);
var birthMonth = parseInt(dateAry[1]);
var birthYear = parseInt(dateAry[2]);
var birthDate = new Date(birthYear, birthMonth, birthDay);
var currentDate = new Date();
var age = currentDate - birthDate; // don't forget the var keyword
var days = Math.floor(age / 86400000); // no need to use a string
var years = Math.floor(days / 365); // quite inaccurate actually
var remaning_days = days % 365; // use modulo operator
age1.value = years; // no need to type-cast
}
function CalculateAge() {
var dob1 = $("#txtBirthday");
var age1 = $("#age");
var dateAry = dob1.val().split("/");
var birthDay = parseInt(dateAry[0]);
var birthMonth = parseInt(dateAry[1]);
var birthYear = parseInt(dateAry[2]);
var one_day=1000*60*60*24;
var date1 = new Date(birthYear, birthMonth, birthDay);
// Convert both dates to milliseconds
var date1_ms = date1.getTime();
var date2 = new Date();
var date2_ms = date2.getTime();
// Calculate the difference in milliseconds
var difference_ms = date2_ms - date1_ms;
// Convert back to days and return
var t = difference_ms/one_day;
age1.val(t/365);
}
if you want approx year use Math.random in result

Time from X not working as expected moment.js

$.each(data[i].replies, function(m, n) {
var currentdate = new Date();
console.log(n.entry.date_entered);
check = moment(n.entry.date_entered, 'YYYY/MM/DD');
check1 = moment(currentdate, 'YYYY/MM/DD');
console.log(check);
console.log(check1);
var month = check.format('M');
var day = check.format('DD');
var year = check.format('YYYY');
var month1 = check1.format('M');
var day1 = check1.format('DD');
var year1 = check1.format('YYYY');
get = moment([year, month, day]);
get1 = moment([year1, month1, day1]);
g = get1.from(get);
});
Sample n.entry.date_entered : 2014-07-28 12:23:43
For all the dates i am getting a few seconds ago don't know why
I think your problem is the format mask that you pass in to moment.
In your sample you use - as the delimiter but in your format mask you use /. This way moment will not be able to parse the date and will give you the current date instead.
Try changing your format mask to "YYYY-MM-DD".

calculate difference between two timestamp and get difference in unix timestamp

I want to calculate the difference between two dateTime, one date is submitted by user and other is current time:
user submitted time - now = difference in unix
user submitted time format is:
2014-03-26 10:52:00
Thanks for your help.
You can simply do this with getTime() which returns the number of milliseconds.
var ds = "2014-03-26 10:52:00";
var newDate = new Date(ds).getTime(); //convert string date to Date object
var currentDate = new Date().getTime();
var diff = currentDate-newDate;
console.log(diff);
Sometimes there are chance for cross browser compatibility in parsing the date string so it is better to parse it like
var ds = "2014-03-26 10:52:00";
var dateArray = ds.split(" "); // split the date and time
var ds1 = dateArray[0].split("-"); // split each parts in date
var ds2 = dateArray[1].split(":"); // split each parts in time
var newDate = new Date(ds1[0], (+ds1[1] - 1), ds1[2], ds2[0], ds2[1], ds2[2]).getTime(); //parse it
var currentDate = new Date().getTime();
var diff = currentDate - newDate;
console.log(diff); //timestamp difference
You can use MomentJS library
var user_submited_time = moment('2014-03-26 10:52:00');
var now = moment();
var value = user_submited_time - now;

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