I'm having some problems converting a string to a date object in google apps script.
My dates are in the following format, from a 3rd party API:
2013-01-17T17:34:50.507
I am attempting to convert this to a Date object:
return Date(stringDate);
And this is being returned:
Thu Jan 01 01:00:00 GMT+01:00 1970
Can someone tell me what i'm doing wrong, and how to resolve this issue ?
With moment.js, it is as easy as this to parse any of ISO 8601 format.
var date = Moment.moment("2013-01-17T17:34:50.507").toDate();
You can use moment.js to parse your arbitrary date string as well.
To use moment.js in GAS, you just need to add it in the script editor.
Open your script in GAS script editor and go to "Resources" then "Libraries...", then put this project key MHMchiX6c1bwSqGM1PZiW_PxhMjh3Sh48 and click "Add". Choose the version from the dropdown, then click "Save". Now, you are ready to use moment.js in GAS.
moment.js can be used to parse date string, create formatted date string, and many other date manipulation. Thanks to the author!
You can find the moment.js documentation here.
It doesn't appear that the Date object knows how to handle that date. The date is in ISO 8601 format. Javascript can handle Dates if they are given timezone information.
You will have to do some testing, but if those dates given to you are in UTC time, then just add a Z to the end of the date string before you call new Date().
Edit: The Apps Script Date object can't seem to handle a timezone other than UTC when parsing a Date. I opened an issue for it.
It doesn't work in GScript, at least for me at the time I'm writing it.
This post serves a working alternative: How do I format this date string so that google scripts recognizes it?
As of now new Date() seems to work:
var dT = new Date("2013-01-17T17:34:50.507");
console.info("dT: %s or %d", dT, dT.getTime());
returns dT: Thu Jan 17 17:34:50 GMT+01:00 2013 or 1.358440490507E12 in Google Apps Script
Related
in Java I set the date as time in mSec since 1970, e.g. futuredate=1640995200000l //1 Jan 2022.
When this is compiled into JavaScript by GWT, I believe it uses the Jsdate library which says it is a native javascript date object
1 jan 2022 ends up as this object in the JavaScript _.futuredate={l:3120128, m:391243, h:0}
Can someone help me interpret this format please, it doesn't quite make sense to me
thanks
To work with date and time on the GWT client side one can use com.google.gwt.i18n.shared.DateTimeFormat. com.google.gwt.i18n.shared.DateTimeFormat.PredefinedFormat includes already many predefined formats, but you can naturally use your own, such as "EEEE, y MMMM dd".
Based on your example:
Date myDate = DateTimeFormat.getFormat("dd.MM.yyyy").parse("01.01.2022");
DateTimeFormat myFormat = DateTimeFormat.getFormat(PredefinedFormat.ISO_8601);
String s = myFormat.format(myDate);
The first line only simulates the date that you already set in Java and it is meant to show another example of a date format and how to parse a String.
I have a date in this format: December 5th 2017. How do I convert it to either a timestamp or a date object?
I tried the following but it return NaN:
let tDate = new Date('December 5th 2017')
use a library like moment.js (momentjs.com) to parse custom date formats into Dates. As of version 2.13 it apparently comes with typings out of the box and can therefore be used easily with TypeScript (aureliajsrocks.com/moment-js-now-typescript-compatbile)
I am using momentjs in alloy framework in Appcelerator. My api returns the date as - 2017-09-06T12:03:00.000Z I am using below code to format this date into readable form -
var dt = moment(record.createddate);
$.dateValue.text = moment(dt).format('lll');
But the output I get is - Sep 6, 2017 5:33 PM, which is not correct as the date saved in db and returned from api is EST and the date getting displayed is GMT+0530. How should i format this date so that I get the correct date value?
I guess, somewhere in your code, the moment's default timezone is set to GMT+0530. Something like moment.tz.setDefault('Asia/Colombo') could do this.
You can define in what timezone you want to display your date. This should work for you :
moment('2017-09-06T12:03:00.000Z').tz("Etc/GMT").format('lll')
Or if you want the value I suggested in the comments :
moment('2017-09-06T12:03:00.000Z').tz("Etc/GMT-2").format('lll')
For more informations about moment.js timezones, you can check the moment.js timezone docs.
Hope this helps !
I have a ISO8601 string (e.g. date="2015-07-10T04:31:25") I need to convert this to the format:
July 7, 2015, 4:31:25 PM (EDT)
Even though I can write a template and use substring() to transform the string in the date time format. However I am not sure how to achieve the AM/PM and time zone information?
Working code templates would be highly appreciated. Thanks!
I am not sure how to achieve the AM/PM ...
It can be calculated from the hour component as:
substring('AMPM', 1 + 2*(number($hour) > 11), 2)
Of course, in the given input, where $hour would be "04", the correct result is "AM", not "PM".
... and time zone information?
Your input does not contain any time zone information, so unless you want to hard-code EDT as a string, there is no way to get it.
How can I shift timezone of Date object created in local timezone to target timezone?
Here is what I need. I want web-client to pick a date using DatePicker but resulting Date object should look like as if it was picked in another timezone. Since there is no way to tell DatePicker to do that I have to manually shift date.
For example it's Apr 6th 2012 2:42AM in California right now. Created Date will be in UTC-7 timezone. I want to have Date object with Apr 6th 2012 2:42AM in Europe/Moscow timezone.
Here is I do it right now:
final TimeZoneConstants constTz = GWT.create(TimeZoneConstants.class);
final TimeZone timeZoneMsk = TimeZone.createTimeZone(constTz.europeMoscow());
final TimeZone timeZoneCali = TimeZone.createTimeZone(constTz.americaLosAngeles());
Date curTime = new Date();
DateTimeFormat dateTimeFormat = DateTimeFormat.getFullDateTimeFormat();
Date mskTime = new Date(curTime.getTime() - (curTime.getTimezoneOffset() - timeZoneMsk.getStandardOffset()) * 60 * 1000);
String strLocal = dateTimeFormat.format(curTime, timeZoneCali); // Friday, 2012 April 06 02:42:59 Pacific Daylight Time
String strMsk = dateTimeFormat.format(mskTime, timeZoneMsk); // Friday, 2012 April 06 02:42:59 Moscow Standard Time
There are two problems with this method:
If you ask me it looks pretty bizarre.
Timezone in mskTime is still -0007. I wonder if it can cause any problems in future when I deserialize this object from Google App Engine datastore.
Or should I just produce string with full date of local Californian time, replace timezone in string and then generate new Date by calling DateTimeFormat.parse() ? It looks pretty hacky too...
Also what do you think of JodaTime for GWT ? Is it stable enough for production ?
Your code looks about right. Using DateTimeFormat.parse might make the intention clearer to a casual reader. It's not very often that you are given timezones A and B and one Date object, and you have to produce a new Date object that, when formatted in B, has the same time as the original when formatted in A.
Timezone in mskTime is still -0007. I wonder if it can cause any problems in future when I deserialize this object from Google App Engine datastore.
No, there can be no problems. Remember that a Date object represents a universal point in time not bound to a timezone. When it's April 6 14:40 in Moscow, it's April 6 03:40 in California, so the Date objects are equal.