I am saving my date like this in my mongo database:
Thu Oct 25 2018 17:30:03 GMT+0300 (EAT)
I would like to use moment.js to have in the front end like 1 hour ago or 3 hours ago. How would I go about this?
If you're using single locale try
moment('Thu Oct 25 2018 17:30:03 GMT+0300').fromNow(); //eg. 1 day ago, 2 hours ago etc
or
moment('Thu Oct 25 2018 17:30:03 GMT+0300').fromNow(true); //eg. 1 day, 2 hours
for more see docs
and:
you can add your date and then compare with the current time:
const timestamp = moment(dateFromDatabase, 'ddd MMM DD YYYY HH:mm:ss GMT Z').fromNow();
or you can also use diff()
const timestamp = moment(dateFromDatabase, 'ddd MMM DD YYYY HH:mm:ss GMT Z').diff(Date.now(), 'hours');
you can change the measurements using years, months, weeks, days, hours, minutes, and seconds.
For more information, you can take a look on here.
Related
I'm using momentjs to calculate certain dates. For example:
moment().add(7, 'days');
This returns date in 7 days in same time like now:
Thu May 21 2020 12:06:35 GMT+0200.
What is the function for adding days but in specific time like:
Thu May 21 2020 17:00:00 GMT+0200.
You could chain the add() to get add hours,minutes,seconds.
console.log('Current time: ', moment().format("DD-MM-YYYY hh:mm:ss"));
var start_time = moment()
.add(1, "days")
.add(4, "hours")
.add(21, "seconds");
console.log('modified time: ', start_time.format("DD-MM-YYYY hh:mm:ss"));
<script src="https://momentjs.com/downloads/moment.js"></script>
I found a solution:
moment({ hour: 17 }).add(7, 'd')
This ads exactly 7 days to today in 17:00:00.
I have an date string as : Wed Aug 30 2017 00:00:00 GMT+0530 (IST) and I want to convert it into like this: 2017-8-30
Now I am doing this:
moment($scope.date.selectedDate).format('YYYY-M-DD') and it is giving the right time but throws a warning as :
moment construction falls back to js date
As the input is JS date so you need to pass input format as well. This can be done by:
moment('Wed Aug 30 2017 00:00:00 GMT+0530', 'ddd MMM DD YYYY HH:mm:ss GMT+-HH:mm').format('YYYY-M-DD');
https://jsfiddle.net/o01ktajp/1/
Relative to the warning you can refer to this post Deprecation warning: moment construction falls back to js Date.
The easiest solution would be to pass the date string in the ISO format.
As for the date, if you simply want to display the date in the UI with that format you can use the 'date' angular filter: https://docs.angularjs.org/api/ng/filter/date.
In your case you could use it like this:
$scope.date.selectedDate | date: 'YYYY-M-DD'
Br,
You can do:
var d = new Date('Wed Aug 30 2017 00:00:00 GMT+0530');
var formated = moment(d).format('YYYY-M-DD');
I have a dataset that looks like this:
datetime count
18:28:20.602 UTC DEC 08 2016 1
20:42:32.017 UTC DEC 08 2016 5
15:33:40.691 UTC DEC 08 2016 1
17:11:54.008 UTC DEC 08 2016 3
20:28:57.861 UTC DEC 08 2016 0
.
.
.
.
The datetime column is in the string format. I'm having difficulty in converting it to a timestamp.
How do I write a Impala/Hive query so that I get the data between '18:28:00.000 UTC DEC 08 2016' to '18:33:00.000 UTC DEC 08 2016'
With Hive:
cast(from_unixtime(unix_timestamp(SHITTY_FORMAT, 'HH:mm:ss.SSS zzz MMM dd yyyy'), 'yyyy-MM-dd HH:mm:ss.SSS') as Timestamp)
...will translate your shitty String format into a UNIX timestamp, then into String standard format (in local timezone because that's the Hive convention), then into a Timestamp.
There is no easier way, unfortunately. And you may have some edge cases because of the 1h overlap in summer/winter times.
Source: the Hive documentation, of course...
With Impala (which does not support the zzz format modifier):
cast(from_unixtime(unix_timestamp(regexp_replace(SHITTY_FORMAT, ' UTC ', ' '), 'HH:mm:ss.SSS MMM dd yyyy'), 'yyyy-MM-dd HH:mm:ss.SSS') as Timestamp)
...will translate your shitty String format into a UNIX timestamp, assuming that all your inputs are in UTC, then into String standard format (in UTC timezone because that's the Impala convention), then into a Timestamp.
I can't figure out what I am doing wrong here.
Passing in a string to moment, with the format and calling .toDate().
toDate() ends up returning a time that is off by 1 hour
moment("2015-11-19T18:34:00-07:00", "YYYY-MM-DDTHH:mm:ssZ").toDate()
> Thu Nov 19 2015 17:34:00 GMT-0800 (PST)
The time should be 18:34, not 17:34. The timezone is showing -08, when it should be showing -07
OK so for example, today is Tuesday, Feb 02. Well the equivalent "Tuesday" from last year was on Feb 03.
How can I find this out programmatically?
Thanks!!
According to Google, there are 604,800,000 milliseconds in a week. That times 52 should give you the same day of the week a year later (right?).
For example:
var date:Date = new Date(2010, 1, 2);
trace(date);
date.setMilliseconds(date.milliseconds - 604800000 * 52);
trace(date);
Output:
Tue Feb 2 00:00:00 GMT-0800 2010
Tue Feb 3 00:00:00 GMT-0800 2009
Just my two cents. I don't like the idea, that the second answer assumes 52 weeks in a year, it will work for a single year, but is a solution to only this exact problem - eg. if you want to check the same thing moving back 10 years it won't work. I'd do it like this:
var today:Date = new Date();
// Here we store the day of the week
var currentDay:int = today.day;
trace (today);
const milisecondsInADay:uint = 1000*60*60*24;
// Here we move back a year, but we can just as well move back 10 years
// or 2 months
today.fullYear -= 1;
// Find the closest date that is the same day of the week as current day
today.time -= milisecondsInADay*(today.day-currentDay);
trace (today);
returns:
Tue Feb 2 21:13:18 GMT+0100 2010
Tue Feb 3 21:13:18 GMT+0100 2009