1.3k GitHub stars and counting — felixge/node-dateformat is a JavaScript project TopGit is tracking across repositories on the platform. A node.js package for Steven Levithan's excellent dateFormat() function.
Snapshot summary built from the project's own GitHub metadata — there's no written TopGit review yet. The page will update automatically when a full review is published.
WHY NO REVIEW YET
TopGit writes full reviews for the most-starred, most-requested repositories. This page is a snapshot until then — see the READ ME tab for the original README in full.
A node.js package for Steven Levithan's excellent dateFormat() function.
Modifications
Removed the Date.prototype.format method. Sorry folks, but extending native prototypes is for suckers.
Added a module.exports = dateFormat; statement at the bottom
Added the placeholder N to get the ISO 8601 numeric representation of the day of the week
Installation
$ npm install dateformat
$ dateformat --help
Usage
As taken from Steven's post, modified to match the Modifications listed above:
import dateFormat, { masks } from "dateformat";
const now = new Date();
// Basic usage
dateFormat(now, "dddd, mmmm dS, yyyy, h:MM:ss TT");
// Saturday, June 9th, 2007, 5:46:21 PM
// You can use one of several named masks
dateFormat(now, "isoDateTime");
// 2007-06-09T17:46:21
// ...Or add your own
masks.hammerTime = 'HH:MM! "Can\'t touch this!"';
dateFormat(now, "hammerTime");
// 17:46! Can't touch this!
// You can also provide the date as a string
dateFormat("Jun 9 2007", "fullDate");
// Saturday, June 9, 2007
// Note that if you don't include the mask argument,
// dateFormat.masks.default is used
dateFormat(now);
// Sat Jun 09 2007 17:46:21
// And if you don't include the date argument,
// the current date and time is used
dateFormat();
// Sat Jun 09 2007 17:46:22
// You can also skip the date argument (as long as your mask doesn't
// contain any numbers), in which case the current date/time is used
dateFormat("longTime");
// 5:46:22 PM EST
// And finally, you can convert local time to UTC time. Simply pass in
// true as an additional argument (no argument skipping allowed in this case):
dateFormat(now, "longTime", true);
// 10:46:21 PM UTC
// ...Or add the prefix "UTC:" or "GMT:" to your mask.
dateFormat(now, "UTC:h:MM:ss TT Z");
// 10:46:21 PM UTC
// You can also get the ISO 8601 week of the year:
dateFormat(now, "W");
// 42
// and also get the ISO 8601 numeric representation of the day of the week:
dateFormat(now, "N");
// 6
Mask options
Mask
Description
d
Day of the month as digits; no leading zero for single-digit days.
dd
Day of the month as digits; leading zero for single-digit days.
ddd
Day of the week as a three-letter abbreviation.
DDD
"Ysd", "Tdy" or "Tmw" if date lies within these three days. Else fall back to ddd.
dddd
Day of the week as its full name.
DDDD
"Yesterday", "Today" or "Tomorrow" if date lies within these three days. Else fall back to dddd.
m
Month as digits; no leading zero for single-digit months.
mm
Month as digits; leading zero for single-digit months.
mmm
Month as a three-letter abbreviation.
mmmm
Month as its full name.
yy
Year as last two digits; leading zero for years less than 10.
yyyy
Year represented by four digits.
h
Hours; no leading zero for single-digit hours (12-hour clock).
hh
Hours; leading zero for single-digit hours (12-hour clock).
H
Hours; no leading zero for single-digit hours (24-hour clock).
HH
Hours; leading zero for single-digit hours (24-hour clock).
M
Minutes; no leading zero for single-digit minutes.
MM
Minutes; leading zero for single-digit minutes.
N
ISO 8601 numeric representation of the day of the week.
o
GMT/UTC timezone offset, e.g. -0500 or +0230.
p
GMT/UTC timezone offset, e.g. -05:00 or +02:30.
s
Seconds; no leading zero for single-digit seconds.
ss
Seconds; leading zero for single-digit seconds.
S
The date's ordinal suffix (st, nd, rd, or th). Works well with d.
l
Milliseconds; gives 3 digits.
L
Milliseconds; gives 2 digits.
t
Lowercase, single-character time marker string: a or p.
tt
Lowercase, two-character time marker string: am or pm.
T
Uppercase, single-character time marker string: A or P.
TT
Uppercase, two-character time marker string: AM or PM.
W
ISO 8601 week number of the year, e.g. 4, 42
WW
ISO 8601 week number of the year, leading zero for single-digit, e.g. 04, 42
Z
US timezone abbreviation, e.g. EST or MDT. For non-US timezones, the GMT/UTC offset is returned, e.g. GMT-0500
'...', "..."
Literal character sequence. Surrounding quotes are removed.
UTC:
Must be the first four characters of the mask. Converts the date from local time to UTC/GMT/Zulu time before applying the mask. The "UTC:" prefix is removed.
Named Formats
Name
Mask
Example
default
ddd mmm dd yyyy HH:MM:ss
Sat Jun 09 2007 17:46:21
shortDate
m/d/yy
6/9/07
paddedShortDate
mm/dd/yyyy
06/09/2007
mediumDate
mmm d, yyyy
Jun 9, 2007
longDate
mmmm d, yyyy
June 9, 2007
fullDate
dddd, mmmm d, yyyy
Saturday, June 9, 2007
shortTime
h:MM TT
5:46 PM
mediumTime
h:MM:ss TT
5:46:21 PM
longTime
h:MM:ss TT Z
5:46:21 PM EST
isoDate
yyyy-mm-dd
2007-06-09
isoTime
HH:MM:ss
17:46:21
isoDateTime
yyyy-mm-dd'T'HH:MM:sso
2007-06-09T17:46:21+0700
isoUtcDateTime
UTC:yyyy-mm-dd'T'HH:MM:ss'Z'
2007-06-09T22:46:21Z
Localization
Day names, month names and the AM/PM indicators can be localized by
passing an object with the necessary strings. For example:
Does felixge/node-dateformat have a project website?
No homepage URL was recorded for felixge/node-dateformat in TopGit's last sync. The README tab above frequently contains screenshots and demo links, or check the repository description on GitHub.
Does felixge/node-dateformat have any tags?
TopGit's last sync did not record any GitHub topics for felixge/node-dateformat. GitHub topics appear in the right sidebar of a repository page; that's the authoritative place to check.
How active is development on felixge/node-dateformat?
The most recent commit recorded on felixge/node-dateformat was 3.4 years ago, based on the GitHub push timestamp. The repository has 155 forks — one of the better signals of community interest.
Is felixge/node-dateformat open source?
Yes — felixge/node-dateformat ships under the MIT license, which makes its source code freely readable (and, depending on license terms, forkable and reusable). Source: github.com/felixge/node-dateformat.
What license does felixge/node-dateformat use?
felixge/node-dateformat is released under the MIT license. Always verify the LICENSE file directly on GitHub for the authoritative terms — license strings can be edited out of sync with a project's actual stance.
Where do I read more about felixge/node-dateformat?
This TopGit page is a snapshot — the READ ME tab shows the project's own README content (links stripped, images preserved). The GitHub repository at github.com/felixge/node-dateformat is the definitive source.
Read full README in the tab above.
Want a second opinion on node-dateformat?
Ask an AI that can read this page — one click and you get its take on node-dateformat.
/node-dateformat