Convert yyyy-mm-dd to UTC in Javascript - javascript

I need to convert a date in yyyy-mm-dd like 2011-12-30 to UTC using only javascript. How?

var utc = new Date('2011-12-30').toUTCString();
jsFiddle.

If you're having problems getting the other listed solution to work in firefox or safari you can use: http://www.datejs.com/
myDate = new Date.parse("2011-12-30")
myUTCDate = Date.UTC(myDate.getFullYear(), myDate.getMonth(), myDate.getDate(), myDate.getHours(), myDate.getMinutes(), myDate.getSeconds(), myDate.getMilliseconds());
Voila!!

This is very simple method to convert String to Date in JavaScript
var msomtDate = Date.parse('Here Your Date String'+' UTC',"yyyy/MM/dd HH:mm:ss");

var toUTC = function (date) {
var newDate = new Date();
newDate.setTime(date.getTime() + (date.getTimezoneOffset() * 60 * 1000));
return newDate;
};
console.log(toUTC(new Date('2011-12-30')));

Related

Javascript date with xs:dateTime

Is there a simple way to convert standard JavaScript date format to XS:date Time
So I have a date value (new Date()) and I need in the format: 2021-06-04T13:36:00.000+05:00
It strange but could not find simple solution
I think this worked for you
var date = new Date();
var formattedDate = date.toISOString() + "+" +(date.getTimezoneOffset() / 60) + ":00"
console.log(formattedDate)

Material2 Datepicker - Convert date to timestamp without time [duplicate]

Can I convert iso date to milliseconds?
for example I want to convert this iso
2012-02-10T13:19:11+0000
to milliseconds.
Because I want to compare current date from the created date. And created date is an iso date.
Try this
var date = new Date("11/21/1987 16:00:00"); // some mock date
var milliseconds = date.getTime();
// This will return you the number of milliseconds
// elapsed from January 1, 1970
// if your date is less than that date, the value will be negative
console.log(milliseconds);
EDIT
You've provided an ISO date. It is also accepted by the constructor of the Date object
var myDate = new Date("2012-02-10T13:19:11+0000");
var result = myDate.getTime();
console.log(result);
Edit
The best I've found is to get rid of the offset manually.
var myDate = new Date("2012-02-10T13:19:11+0000");
var offset = myDate.getTimezoneOffset() * 60 * 1000;
var withOffset = myDate.getTime();
var withoutOffset = withOffset - offset;
console.log(withOffset);
console.log(withoutOffset);
Seems working. As far as problems with converting ISO string into the Date object you may refer to the links provided.
EDIT
Fixed the bug with incorrect conversion to milliseconds according to Prasad19sara's comment.
A shorthand of the previous solutions is
var myDate = +new Date("2012-02-10T13:19:11+0000");
It does an on the fly type conversion and directly outputs date in millisecond format.
Another way is also using parse method of Date util which only outputs EPOCH time in milliseconds.
var myDate = Date.parse("2012-02-10T13:19:11+0000");
Another option as of 2017 is to use Date.parse(). MDN's documentation points out, however, that it is unreliable prior to ES5.
var date = new Date(); // today's date and time in ISO format
var myDate = Date.parse(date);
See the fiddle for more details.
Yes, you can do this in a single line
let ms = Date.parse('2019-05-15 07:11:10.673Z');
console.log(ms);//1557904270673
Another possible solution is to compare current date with January 1, 1970, you can get January 1, 1970 by new Date(0);
var date = new Date();
var myDate= date - new Date(0);
Another solution could be to use Number object parser like this:
let result = Number(new Date("2012-02-10T13:19:11+0000"));
let resultWithGetTime = (new Date("2012-02-10T13:19:11+0000")).getTime();
console.log(result);
console.log(resultWithGetTime);
This converts to milliseconds just like getTime() on Date object
var date = new Date()
console.log(" Date in MS last three digit = "+ date.getMilliseconds())
console.log(" MS = "+ Date.now())
Using this we can get date in milliseconds
var date = new Date(date_string);
var milliseconds = date.getTime();
This worked for me!
if wants to convert UTC date to milliseconds
syntax : Date.UTC(year, month, ?day, ?hours, ?min, ?sec, ?milisec);
e.g :
date_in_mili = Date.UTC(2020, 07, 03, 03, 40, 40, 40);
console.log('miliseconds', date_in_mili);
In case if anyone wants to grab only the Time from a ISO Date, following will be helpful. I was searching for that and I couldn't find a question for it. So in case some one sees will be helpful.
let isoDate = '2020-09-28T15:27:15+05:30';
let result = isoDate.match(/\d\d:\d\d/);
console.log(result[0]);
The output will be the only the time from isoDate which is,
15:27

Changing the time from one format to Local time in JavaScript [duplicate]

Okay, say JSON parse string UTC date as below:
2012-11-29 17:00:34 UTC
Now if I want to convert this UTC date to my local time, how can I do this?
How do I format it to something else like yyyy-MM-dd HH:mm:ss z?
This date.toString('yyyy-MM-dd HH:mm:ss z'); never work out :/
Try:
var date = new Date('2012-11-29 17:00:34 UTC');
date.toString();
var offset = new Date().getTimezoneOffset();
offset will be the interval in minutes from Local time to UTC. To get Local time from a UTC date, you would then subtract the minutes from your date.
utc_date.setMinutes(utc_date.getMinutes() - offset);
Here is another option that outputs mm/dd/yy using toLocaleString():
const date = new Date('2012-11-29 17:00:34 UTC');
date.toLocaleString();
//output 11/29/2012
To format your date try the following function:
var d = new Date();
var fromatted = d.toLocaleFormat("%d.%m.%Y %H:%M (%a)");
But the downside of this is, that it's a non-standard function, which is not working in Chrome, but working in FF (afaik).
Chris
The solutions above are right but might crash in FireFox and Safari! and that's what webility.js is trying to solve. Check the toUTC function, it works on most of the main browers and it returns the time in ISO format
You could take a look at date-and-time api for easily date manipulation.
let now = date.format(new Date(), 'YYYY-MM-DD HH:mm:ss', true);
console.log(now);
<script src="https://cdn.jsdelivr.net/npm/date-and-time/date-and-time.min.js"></script>
This should work
var date = new Date('2012-11-29 17:00:34 UTC');
date.toString()
This works for both Chrome and Firefox.
Not tested on other browsers.
const convertToLocalTime = (dateTime, notStanderdFormat = true) => {
if (dateTime !== null && dateTime !== undefined) {
if (notStanderdFormat) {
// works for 2021-02-21 04:01:19
// convert to 2021-02-21T04:01:19.000000Z format before convert to local time
const splited = dateTime.split(" ");
let convertedDateTime = `${splited[0]}T${splited[1]}.000000Z`;
const date = new Date(convertedDateTime);
return date.toString();
} else {
// works for 2021-02-20T17:52:45.000000Z or 1613639329186
const date = new Date(dateTime);
return date.toString();
}
} else {
return "Unknown";
}
};
// TEST
console.log(convertToLocalTime('2012-11-29 17:00:34 UTC'));
// d = "2021-09-23T15:51:48.31"
console.log(new Date(d + "z").toLocaleDateString()); // gives 9/23/2021
console.log(new Date(d + "z").toLocaleString()); // gives 9/23/2021, 10:51:48 AM
console.log(new Date(d + "z").toLocaleTimeString()); // gives 10:51:48 AM
/*
* convert server time to local time
* simbu
*/
function convertTime(serverdate) {
var date = new Date(serverdate);
// convert to utc time
var toutc = date.toUTCString();
//convert to local time
var locdat = new Date(toutc + " UTC");
return locdat;
}

Javascript to convert UTC to local time

Okay, say JSON parse string UTC date as below:
2012-11-29 17:00:34 UTC
Now if I want to convert this UTC date to my local time, how can I do this?
How do I format it to something else like yyyy-MM-dd HH:mm:ss z?
This date.toString('yyyy-MM-dd HH:mm:ss z'); never work out :/
Try:
var date = new Date('2012-11-29 17:00:34 UTC');
date.toString();
var offset = new Date().getTimezoneOffset();
offset will be the interval in minutes from Local time to UTC. To get Local time from a UTC date, you would then subtract the minutes from your date.
utc_date.setMinutes(utc_date.getMinutes() - offset);
Here is another option that outputs mm/dd/yy using toLocaleString():
const date = new Date('2012-11-29 17:00:34 UTC');
date.toLocaleString();
//output 11/29/2012
To format your date try the following function:
var d = new Date();
var fromatted = d.toLocaleFormat("%d.%m.%Y %H:%M (%a)");
But the downside of this is, that it's a non-standard function, which is not working in Chrome, but working in FF (afaik).
Chris
The solutions above are right but might crash in FireFox and Safari! and that's what webility.js is trying to solve. Check the toUTC function, it works on most of the main browers and it returns the time in ISO format
You could take a look at date-and-time api for easily date manipulation.
let now = date.format(new Date(), 'YYYY-MM-DD HH:mm:ss', true);
console.log(now);
<script src="https://cdn.jsdelivr.net/npm/date-and-time/date-and-time.min.js"></script>
This should work
var date = new Date('2012-11-29 17:00:34 UTC');
date.toString()
This works for both Chrome and Firefox.
Not tested on other browsers.
const convertToLocalTime = (dateTime, notStanderdFormat = true) => {
if (dateTime !== null && dateTime !== undefined) {
if (notStanderdFormat) {
// works for 2021-02-21 04:01:19
// convert to 2021-02-21T04:01:19.000000Z format before convert to local time
const splited = dateTime.split(" ");
let convertedDateTime = `${splited[0]}T${splited[1]}.000000Z`;
const date = new Date(convertedDateTime);
return date.toString();
} else {
// works for 2021-02-20T17:52:45.000000Z or 1613639329186
const date = new Date(dateTime);
return date.toString();
}
} else {
return "Unknown";
}
};
// TEST
console.log(convertToLocalTime('2012-11-29 17:00:34 UTC'));
// d = "2021-09-23T15:51:48.31"
console.log(new Date(d + "z").toLocaleDateString()); // gives 9/23/2021
console.log(new Date(d + "z").toLocaleString()); // gives 9/23/2021, 10:51:48 AM
console.log(new Date(d + "z").toLocaleTimeString()); // gives 10:51:48 AM
/*
* convert server time to local time
* simbu
*/
function convertTime(serverdate) {
var date = new Date(serverdate);
// convert to utc time
var toutc = date.toUTCString();
//convert to local time
var locdat = new Date(toutc + " UTC");
return locdat;
}

Parse string in given format to date

I want to parse date in the format ddMMyyhhmm (eg 2804121530 representing 28th April 2012, 3:30 PM) to javascript Date() object.
Is there any oneliner solution to it? I'm looking for something of the kind:
var date = Date.parse('2804121530', 'ddMMyyhhmm');
or
var date = new Date('2804121530', 'ddMMyyhhmm');
Thanks for help!
A useful library here is DateJs. Just add a reference:
<script src="http://datejs.googlecode.com/files/date.js"
type="text/javascript"></script>
and use Date.parseExact:
var dateStr = '2804121530';
var date = Date.parseExact(dateStr, 'ddMMyyHHmm');
For a fast solution you can brake that string into pieces and create date from those pieces
function myDateFormat(myDate){
var day = myDate[0]+''+myDate[1];
var month = parseInt(myDate[2]+''+myDate[3], 10) - 1;
var year = '20'+myDate[4]+''+myDate[5];
var hour = myDate[6]+''+myDate[7];
var minute = myDate[8]+''+myDate[9];
return new Date(year,month,day,hour,minute,0,0);
}
var myDate = myDateFormat('2804121530');
or a simper solution:
function myDateFormat(myDate){
return new Date(('20'+myDate.slice(4,6)),(parseInt(myDate.slice(2,4), 10)-1),myDate.slice(0,2),myDate.slice(6,8),myDate.slice(8,10),0,0);
}
var myDate = myDateFormat('2804121530');
(new Date(1381344723000)).toUTCString()
Correct me if 'm worng...

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