strftime v0.10.2
strftime
strftime for JavaScript. Works in (at least) node.js and browsers. Supports localization and timezones. Most standard specifiers from C are supported as well as some other extensions from Ruby.
Installation
node:
npm install strftime
bower install strftime
component install samsonjs/strftime
yarn:
yarn add strftime
Or you can copy strftime.js wherever you want to use it, whether that's with a <script> tag or require
or anything else.
Changelog
Usage
var strftime = require('strftime') // not required in browsers
console.log(strftime('%B %d, %Y %H:%M:%S')) // => April 28, 2011 18:21:08
console.log(strftime('%F %T', new Date(1307472705067))) // => 2011-06-07 18:51:45
If you want to localize it:
var strftime = require('strftime') // not required in browsers
var it_IT = {
identifier: 'it-IT',
days: ['domenica', 'lunedi', 'martedi', 'mercoledi', 'giovedi', 'venerdi', 'sabato'],
shortDays: ['dom', 'lun', 'mar', 'mer', 'gio', 'ven', 'sab'],
months: ['gennaio', 'febbraio', 'marzo', 'aprile', 'maggio', 'giugno', 'luglio', 'agosto', 'settembre', 'ottobre', 'novembre', 'dicembre'],
shortMonths: ['gen', 'feb', 'mar', 'apr', 'mag', 'giu', 'lug', 'ago', 'set', 'ott', 'nov', 'dic'],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
D: '%m/%d/%y',
F: '%Y-%m-%d',
R: '%H:%M',
X: '%T',
c: '%a %b %d %X %Y',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
x: '%D'
}
}
var strftimeIT = strftime.localize(it_IT)
console.log(strftimeIT('%B %d, %Y %H:%M:%S')) // => aprile 28, 2011 18:21:08
console.log(strftimeIT('%B %d, %Y %H:%M:%S', new Date(1307472705067))) // => giugno 7, 2011 18:51:45
Some locales are bundled and can be used like so:
var strftime = require('strftime') // not required in browsers
var strftimeIT = strftime.localizeByIdentifier('it_IT')
console.log(strftimeIT('%B %d, %Y %H:%M:%S')) // => aprile 28, 2011 18:21:08
console.log(strftimeIT('%B %d, %Y %H:%M:%S', new Date(1307472705067))) // => giugno 7, 2011 18:51:45
The full list of bundled locales is below.
Time zones can be passed in as an offset from GMT in minutes.
var strftime = require('strftime') // not required in browsers
var strftimePDT = strftime.timezone(-420)
var strftimeCEST = strftime.timezone(120)
console.log(strftimePDT('%B %d, %y %H:%M:%S', new Date(1307472705067))) // => June 07, 11 11:51:45
console.log(strftimeCEST('%F %T', new Date(1307472705067))) // => 2011-06-07 20:51:45
Alternatively you can use the timezone format used by ISO 8601, +HHMM
or -HHMM
.
var strftime = require('strftime') // not required in browsers
var strftimePDT = strftime.timezone('-0700')
var strftimeCEST = strftime.timezone('+0200')
console.log(strftimePDT('%F %T', new Date(1307472705067))) // => 2011-06-07 11:51:45
console.log(strftimeCEST('%F %T', new Date(1307472705067))) // => 2011-06-07 20:51:45
Supported Specifiers
Extensions from Ruby are noted in the following list.
Unsupported specifiers are rendered without the percent sign.
e.g. %q
becomes q
. Use %%
to get a literal %
sign.
- A: full weekday name
- a: abbreviated weekday name
- B: full month name
- b: abbreviated month name
- C: AD century (year / 100), padded to 2 digits
- c: equivalent to
%a %b %d %X %Y %Z
in en_US (based on locale) - D: equivalent to
%m/%d/%y
in en_US (based on locale) - d: day of the month, padded to 2 digits (01-31)
- e: day of the month, padded with a leading space for single digit values (1-31)
- F: equivalent to
%Y-%m-%d
in en_US (based on locale) - H: the hour (24-hour clock), padded to 2 digits (00-23)
- h: the same as %b (abbreviated month name)
- I: the hour (12-hour clock), padded to 2 digits (01-12)
- j: day of the year, padded to 3 digits (001-366)
- k: the hour (24-hour clock), padded with a leading space for single digit values (0-23)
- L: the milliseconds, padded to 3 digits Ruby extension
- l: the hour (12-hour clock), padded with a leading space for single digit values (1-12)
- M: the minute, padded to 2 digits (00-59)
- m: the month, padded to 2 digits (01-12)
- n: newline character
- o: day of the month as an ordinal (without padding), e.g. 1st, 2nd, 3rd, 4th, ...
- P: "am" or "pm" in lowercase (Ruby extension, based on locale)
- p: "AM" or "PM" (based on locale)
- R: equivalent to
%H:%M
in en_US (based on locale) - r: equivalent to
%I:%M:%S %p
in en_US (based on locale) - S: the second, padded to 2 digits (00-60)
- s: the number of seconds since the Epoch, UTC
- T: equivalent to
%H:%M:%S
in en_US (based on locale) - t: tab character
- U: week number of the year, Sunday as the first day of the week, padded to 2 digits (00-53)
- u: the weekday, Monday as the first day of the week (1-7)
- v: equivalent to
%e-%b-%Y
in en_US (based on locale) - W: week number of the year, Monday as the first day of the week, padded to 2 digits (00-53)
- w: the weekday, Sunday as the first day of the week (0-6)
- X: equivalent to
%T
or%r
in en_US (based on locale) - x: equivalent to
%D
in en_US (based on locale) - Y: the year with the century
- y: the year without the century, padded to 2 digits (00-99)
- Z: the time zone name, replaced with an empty string if it is not found
- z: the time zone offset from UTC, with a leading plus sign for UTC and zones east of UTC and a minus sign for those west of UTC, hours and minutes follow each padded to 2 digits and with no delimiter between them
For more detail see man 3 strftime
as the format specifiers should behave identically. If behaviour differs please file a bug.
Any specifier can be modified with -
, _
, 0
, or :
as well, as in Ruby. Using %-
will omit any leading zeroes or spaces, %_
will force spaces for padding instead of the default, and %0
will force zeroes for padding. There's some redundancy here as %-d
and %e
have the same result, but it solves some awkwardness with formats like %l
. Using %:
for time zone offset, as in %:z
will insert a colon as a delimiter.
Bundled Locales
- de_DE
- en_CA
- en_US
- es_MX
- fr_FR
- it_IT
- nl_NL
- pt_BR
- ru_RU
- tr_TR
- zh_CN
Contributors
- Alexandr Nikitin
- Andrew Pirondini of iFixit
- Andrew Schaaf
- Ayman Nedjmeddine
- Cory Heslip
- Douglas de Espindola
- Forbes Lindesay
- John Zwinck
- Joost Hietbrink
- Kevin Jin
- Michael J.
- Peter deHaan
- Rob Colburn
- Ryan Regalado
- Ryan Stafford
- Sami Samhuri
- Stian Grytøyr
- TJ Holowaychuk
- w0den
- Yusuke Kawasaki
- Aryan Arora
License
Copyright 2010 - 2023 Sami Samhuri sami@samhuri.net
11 months ago
2 years ago
7 years ago
9 years ago
9 years ago
9 years ago
10 years ago
10 years ago
10 years ago
10 years ago
11 years ago
11 years ago
11 years ago
11 years ago
11 years ago
11 years ago
12 years ago
13 years ago
13 years ago
13 years ago
13 years ago
13 years ago
13 years ago
13 years ago
13 years ago
13 years ago
13 years ago
13 years ago
13 years ago