Date.prototype

v3.5.0 Jun 2012

Date.prototype provides JavaScript Date instance methods for parsing, formatting, and calculating dates. It uses a concise and configurable algorithm for interpreting format codes.

Features include:

• Parses almost any format with ability to register custom format parsing.
• Supports formatting codes for sprintf, php, and SQL with the ability to register custom formating.
• Adds and subtracts years, months, days, hours, minutes or seconds.
• Calculates differences between dates in a given unit.
• Methods are available on all Date Objects.

Examples:

$D('2006-09-20').strftime('%m/%d/%Y'); // "09/20/2006"
$D('Sep 20 2006').add(3).strftime('%Y-%m-%d'); // "2006-09-23"
$D('09/20/2006').add(4, 'years').strftime('%Y-%m-%d'); // "2010-09-20"
$D('09/20/2006 20:15:00').add(4, 'hours').format('%Y-%m-%d %H:%M:%S'); // "2006-09-21 00:15:00"
$D('2006-09-20').format('m/d/Y'); // "09/20/2006"
$D('2006.09.28').diff('20 Sep, 2006', 'days'); // 8

See reference.html for demo and complete guide Unit Tests for demo and complete guide

ChangeLog

v3.5 Jun 2012

• Add Date#equals, Date#isBefore, Date#isAfter
• Add Date#schedule, Date#unschedule, Date#getSchedule
• Add Date.Timer class
• Centralize Date parse patterns

v3.4 Apr 2012

• Fix UTC Offset handling
• Recognize Chicago dates that are missing a comma
• Recognize Conversational dates that have leading weekday name
• Recognize 24-hour time that contains "GMT" and/or timezone name (e.g. native JS toString() format)
• Recognize date expressions with millisecond units (e.g. "in 250 milliseconds", "250 milliseconds ago")
• Recognize + and - date expressions (e.g. "+2 hours", "-3 years")
• Recognize ASP JSON format (e.g. "/Date(1296824894700)/", "/Date(1296824894700-0700)/")
• Use strict mode

v3.3 Dec 2011

• Fixed documentation of Date#setUTCOffsetString
• Ability to parse ISO-8601 dates containing timezone
• Ability to parse RFC 2822 dates

v3.2 Jul 2011

• Add ability to easily add and remove parse patterns
• Update inline documentation to work with JSDoc
• Update 12-hour regex to allow leading 0s

v3.1 Feb 2011

• Update month addition/subtraction behavior: When new month has fewer days than original, go to last day of month instead of wrapping to next month.
• Remove use of named function expressions

v3.0 Oct 2010

• Initial push to Github
• Unit tests using QUnit
• Add support for PHP format codes L, t and e

v2.0 Sep 2008

• Initial public release
• Add unit tests
• Create reference.html

v1.0 Dec 2005

• Initial private release

Full Github History