moment.js get the last saturday - momentjs

I want to use
.startOf('day')
on last saturday, and if today is saturday, I want to get the start of today. I tried this but is seems not working:
moment().isoWeekday("Saturday").startOf('day')

Try This
const today = moment();
const lastSat = today.isoWeekday(-1);
const startDayOfLastSat= lastSat.startOf('day')

Related

How to fomat date UTC with moment.js?

I am struggling to understand how to work with moment.js (UTC):
without utc
const now = moment().format() // result: 2022-06-04T02:48:50+03:00 (that's correct, but i need a format like this: 2022-06-04T02:48:50 ).
with utc
const now = moment.utc().format() // result: 2022-06-03T23:50:54Z // the problem is that as you can see the result is behind 3 hours
How to handle this situation?

How to find the 24 hours difference based on Trip booked time

From the API, I'm getting Trip booked Timezone(PST), Date-Time(2020-07-10 16:00:00). Now I want to check the 24 hours time difference with the user browser current time and display Cancel button otherwise, we need to hide the button. What I have done below is I'm passing trip booked time-2020-08-10 16:58:00 and booked timezone-PST which is getting from API then I'm finding the currentDate and taking the difference using the diff method. But I'm not getting current values. Any Help?
const departureDateWithTimeZone = moment.tz('2020-08-10 16:58:00', 'PST');
const currentDate = moment().format();
const diff = departureDateWithTimeZone.diff(currentDate, 'h');
Docs state that the last argument in moment.tz should be a time zone identifier.
Use America/Los_Angeles (or any other correct tz identifier) instead of PST:
const departureDateWithTimeZone = moment.tz('2020-08-10 16:58:00', 'America/Los_Angeles');
const currentDate = moment();
const diff = departureDateWithTimeZone.diff(currentDate, 'h');
console.log(`Current date: ${currentDate.format('YYYY-MM-DD HH:mm:ss Z')}`);
console.log(`Departure date: ${departureDateWithTimeZone.format('YYYY-MM-DD HH:mm:ss Z')}`);
console.log(`Diff in hours: ${diff}`);
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.27.0/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.31/moment-timezone-with-data.min.js"></script>

Disable past days in Fullcalendar

I'm using fullcalendar with agendaWeek as defaultView. How can i make past days as non selectable .
For ex today is 15th August and i don't want to let user to select dates older , like on 13th August.
Thank you
It seems that the best solution is to use the option validRange
validRange: {
start: today,
end: '2025-06-01'
},
where
var today = new Date();
end the end date is some date in distant future.

moment toISOstring without modifying date

I have a date like "Thu Sep 01 2016 00:00:00 GMT+0530 (IST)" which I need to send to server as ISO-8601 utc time. I tried like :
moment(mydate).toISOString()
moment.utc(mydate).toISOString()
moment(mydate).utcOffset("+00:00").toISOString()
but I am getting the result like
2016-08-31T18:30:00.000Z
which is 1day behind my intended time. So what can I do to make moment ignore my local timezone and see it as UTC?
Edit:
The expected output is
2016-09-01T18:30:00.000Z
And no, the initial input isn't a string rather a javascript "new Date()" value.
Reason this happens:
This happens because .toISOString() returns a timestamp in UTC, even if the moment in question is in local mode. This is done to provide consistency with the specification for native JavaScript Date .toISOString()
Solution:
Use the same function and pass true value to it. This will prevent UTC Conversion.
moment(date).toISOString(true)
const date = new Date("2020-12-17T03:24:00");
const dateISOStringUTC = moment(date).toISOString();
const dateISOString = moment(date).toISOString(true);
console.log("Converted to UTC:" + dateISOStringUTC)
console.log("Actual Date value:" + dateISOString)
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>
I take the same problem today and find the solution.
Here is the solution: moment(date,moment.ISO_8601)
var date = new Date();
console.log("Original Date");
console.log(date);
console.log("After Moment Format");
console.log(moment(date,moment.ISO_8601));
Test Execution:
Moment Documentation: MomentJs

how to get previous month first day and future month last day using moment.js

how to get previous month first day and future month last day using moment.js,Please guide me with the relevant script required to achieve this
try something like
var prevMonthFirstDay = new moment().subtract(1, 'months').date(1)
and
var nextMonthLastDay = new moment().add(2, 'months').date(0)
or more verbose:
prevMonthFirstDay : moment().subtract(1, 'months').startOf('month')
nextMonthLastDay: moment().add(1, 'months').endOf('month')

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