DateTime formatting & parsing in Vue using Luxon

by Vue.js Examples

vue-luxon

Easy use of datetime with Luxon in Vue.

View Demo View Github

Install

npm install vue-luxon

Setup

import VueLuxon from "vue-luxon";
Vue.use(VueLuxon);

By default, vue-luxon expect the given datetime string to be time zone utc and format iso . The output will be based on the client's locale.

Change the default settings:

Vue.use(VueLuxon, {
    input: {
        zone: "utc",
        format: "iso"
    },
    output: "short"
});

Learn more about settings

Basic usage

You can use the $luxon method everywhere in your vue app:

this.$luxon("2020-10-05T14:48:00.000Z")
// October 5, 2020

Or use the luxon filter, as shown below:

{{ "2020-10-05T14:48:00.000Z" | luxon }}
// October 5, 2020

You can change the output format:

this.$luxon("2020-10-05T14:48:00.000Z", "dd-MM-yyyy")
// 05-10-2020

this.$luxon("2020-10-05 22:36", "relative")
// 22 days ago

And other settings:

this.$luxon("2020-10-05 22:36", {
    input: { format: "yyyy-MM-dd HH:mm", zone: "Asia/Tokyo" },
    output: "full",
})
// October 5, 2020, 3:36 PM GMT+2

These formats will be in the clients browser language, unless you set a [specific language].

Settings

prop options (default) description
input see settings.input The default input format and zone
output see settings.output The default output format, zone, language, and relative settings
templates see templates Define objects to use as properties

Default settings

You can change the default settings with the second argument of the Vue.use function.

Vue.use(VueLuxon, {
  templates: {},
    input: {
        zone: "utc",
        format: "iso"
    },
    output: {
        zone: "local",
        format: {
            year: "numeric",
            month: "long",
            day: "numeric"
        },
        lang: null,
        relative: {
            round: true,
            unit: null
        }
    }
});

You can also override the default settings per method/filter easily:

{{ datetimeString | luxon({ settings }) }}
this.$luxon({ settings })

Zone

eg: UTC, America/New_York, Asia/Tokyo, ...

For the systems local zone you use local.

There is a list on wikipedia

Formats

Input and Output formats

These formats can be used as input.format and output.format

format description in- or output example
sql SQL dates, times, and datetimes both 2017-05-15 09:24:15
iso ISO 8601 date time string both 2018-01-06T13:07:04.054
rfc2822 RFC 2822 both Tue, 01 Nov 2016 13:23:12 +0630
http HTTP header specs (RFC 850 and 1123) both Sun, 06 Nov 1994 08:49:37 GMT
seconds Unix timestamp both 1542674993
millis Unix timestamp milliseconds both 1542674993410
tokens see: tokens both yyyy-MM-dd
templateName see: Templates both

Output formats

These formats can only be used as output.format

format example (with lang en_US)
relative see: Relative
short 10/14/1983, 1:30 PM
shorts 10/14/1983, 1:30:23 PM
med Oct 14, 1983, 1:30 PM
meds Oct 14, 1983, 9:30:33 AM
full October 14, 1983, 9:30 AM EDT
fulls October 14, 1983, 9:30:33 AM EDT
huge Friday, October 14, 1983, 9:30 AM Eastern Daylight Time
huges Friday, October 14, 1983, 9:30:33 AM Eastern Daylight Time
time 9:30 AM
times 09:30:23 AM
time24 09:30
time24s 09:30:23
time24longoffset 09:30:23 Eastern Daylight Time
date_full October 14, 1983
date_huge Tuesday, October 14, 1983
date_med Oct 14, 1983
date_medd Fri, Oct 14, 1983
date_short 10/14/1983

output.format can also be an object:

// using an object:
format: {
    year: 'numeric',
    month: 'long',
    day: 'numeric'
}
Property Possible values Description
weekday narrow short long The representation of the weekday
era narrow short long The representation of the era
year numeric 2-digit The representation of the year
month numeric 2-digit narrow short long The representation of the month
day numeric 2-digit The representation of the day
hour numeric 2-digit The representation of the hour
minute numeric 2-digit The representation of the minute
second numeric 2-digit The representation of the second
timeZoneName short long The representation of the time zone name

settings.input

object or string

An objectcontaining a zone and format or a string of a template name.

{
	zone: "utc",
	format: "iso"
}

settings.output

object or string

An objectcontaining a zone and format or a string of a template name.

{
    zone: "local",
    format: "short",
    lang: "",
    relative: {} // see settings.relative
}

lang language tag set to null will use the client's language.

relative Read about the relative format below

settings.output.lang

string

null default value, this will use the client's language.

Or use a language tag to set a client location.

Examples:

en: English (primary language).
hi: Hindi (primary language).
de-AT: German as used in Austria (primary language with country code).
zh-Hans-CN: Chinese written in simplified

settings.output.relative

Set the output.format to relative to use the relative format. Or use the luxonRelative filter.

{{ datetime | luxonRelative }}
this.$luxon({ output: { format: "relative" } })

{{ datetime | luxonRelative({ style: "short" }) }}
this.$luxon({ output: { format: "relative", relative: { style: "short" } } })

You can change the behavior with the relative settings object in theoutput` .

{
    output: {
        format: "relative"
        relative: {
            style: "long",
            unit: null,
            round: true,
            padding: 0
        },
    }
}
property description default
style the style of units, must be "long", "short", or "narrow" long
unit use a specific unit; if omitted, the method will pick the unit. Use one of "years", "quarters", "months", "weeks", "days", "hours", "minutes", or "seconds" null
round whether to round the numbers in the output. true
padding padding in milliseconds. This allows you to round up the result if it fits inside the threshold. Don't use in combination with {round: false} because the decimal output will include the padding. 0

Templates

You can predefine setting templates.

By default there is a server, client and a inputdate template, but you can add your own to the options object.

It's also possible to use a template in a template, as the inputdate uses the client template's zone for example.

templates: {
    server: {
        zone: "utc",
        format: "iso"
    },
    client: {
        zone: "local",
        format: "short"
    },
    inputdate: {
        zone: "client",
        format: "yyyy-MM-dd"
    }
}

There are multiple ways to use a template:

// This will use the templates zone and format
{{ "2020-10-05T14:48:00.000Z" | luxon({ input: "server" }) }}

// This will use the templates zone
{{ "2020-10-05T14:48:00.000Z" | luxon({ input: { zone: "client" } }) }}

Or you can set the default input and output in the Vue.use function to use these templates by default:

Vue.use(VueLuxon, {
    input: "server",
    output: "client",
});

Or create custom templates to use everywhere:

Vue.use(VueLuxon, {
	templates: {
		serverAMS: {
			zone: "Europe/Amsterdam",
			format: "dd-MM-yyyy HH:mm:ss"
		},
        serverUTC: {
			zone: "UTC",
			format: "yyyy-MM-dd HH:mm:ss"
		},
        clientAMS: {
            zone: "Europe/Amsterdam",
			format: "med"
        }
	},
    input: "serverUTC",
    output: "clientAMS",
});

Tokens

Tokens are useful for formatting and parsing.

You can use the following tokens:

Standalone token Format token Description Example
S millisecond, no padding 54
SSS millisecond, padded to 3 054
u fractional seconds, functionally identical to SSS 054
s second, no padding 4
ss second, padded to 2 padding 04
m minute, no padding 7
mm minute, padded to 2 07
h hour in 12-hour time, no padding 1
hh hour in 12-hour time, padded to 2 01
H hour in 24-hour time, no padding 9
HH hour in 24-hour time, padded to 2 13
Z narrow offset +5
ZZ short offset +05:00
ZZZ techie offset +0500
ZZZZ abbreviated named offset EST
ZZZZZ unabbreviated named offset Eastern Standard Time
z IANA zone America/New_York
a meridiem AM
d day of the month, no padding 6
dd day of the month, padded to 2 06
c E day of the week, as number from 1-7 (Monday is 1, Sunday is 7) 3
ccc EEE day of the week, as an abbreviate localized string Wed
cccc EEEE day of the week, as an unabbreviated localized string Wednesday
ccccc EEEEE day of the week, as a single localized letter W
L M month as an unpadded number 8
LL MM month as an padded number 08
LLL MMM month as an abbreviated localized string Aug
LLLL MMMM month as an unabbreviated localized string August
LLLLL MMMMM month as a single localized letter A
y year, unpadded 2014
yy two-digit year 14
yyyy four- to six- digit year, pads to 4 2014
G abbreviated localized era AD
GG unabbreviated localized era Anno Domini
GGGGG one-letter localized era A
kk ISO week year, unpadded 17
kkkk ISO week year, padded to 4 2014
W ISO week number, unpadded 32
WW ISO week number, padded to 2 32
o ordinal (day of year), unpadded 218
ooo ordinal (day of year), padded to 3 218
D localized numeric date 9/4/2017
DD localized date with abbreviated month Aug 6, 2014
DDD localized date with full month August 6, 2014
DDDD localized date with full month and weekday Wednesday, August 6, 2014
t localized time 9:07 AM
tt localized time with seconds 1:07:04 PM
ttt localized time with seconds and abbreviated offset 1:07:04 PM EDT
tttt localized time with seconds and full offset 1:07:04 PM Eastern Daylight Time
T localized 24-hour time 13:07
TT localized 24-hour time with seconds 13:07:04
TTT localized 24-hour time with seconds and abbreviated offset 13:07:04 EDT
TTTT localized 24-hour time with seconds and full offset 13:07:04 Eastern Daylight Time
f short localized date and time 8/6/2014, 1:07 PM
ff less short localized date and time Aug 6, 2014, 1:07 PM
fff verbose localized date and time August 6, 2014, 1:07 PM EDT
ffff extra verbose localized date and time Wednesday, August 6, 2014, 1:07 PM Eastern Daylight Time
F short localized date and time with seconds 8/6/2014, 1:07:04 PM
FF less short localized date and time with seconds Aug 6, 2014, 1:07:04 PM
FFF verbose localized date and time with seconds August 6, 2014, 1:07:04 PM EDT
FFFF extra verbose localized date and time with seconds Wednesday, August 6, 2014, 1:07:04 PM Eastern Daylight Time
q quarter, no padding 9
qq quarter, padded to 2 13

Change the $luxon method name

Provide a methodName in the settings object.

GitHub