tolocaleformate

Date.toLocaleFormat(formatString);

Here is the detail of parameters:

• formatString : A format string in the same format expected by the strftime() function in C.
  

  format	Description	Example returned values
  Day	---	---
  %a	An abbreviated textual representation of the day	Sun through Sat
  %A	A full textual representation of the day	Sunday through Saturday
  %d	Two-digit day of the month (with leading zeros)	01 to 31
  %e	Day of the month, with a space preceding single digits. Not implemented as described on Windows. See below for more information.	1 to 31
  %j	Day of the year, 3 digits with leading zeros	001 to 366
  %u	ISO-8601 numeric representation of the day of the week	1 (for Monday) though 7 (for Sunday)
  %w	Numeric representation of the day of the week	0 (for Sunday) through 6 (for Saturday)
  Week	---	---
  %U	Week number of the given year, starting with the first Sunday as the first week	13 (for the 13th full week of the year)
  %V	ISO-8601:1988 week number of the given year, starting with the first week of the year with at least 4 weekdays, with Monday being the start of the week	01 through 53 (where 53 accounts for an overlapping week)
  %W	A numeric representation of the week of the year, starting with the first Monday as the first week	46 (for the 46th week of the year beginning with a Monday)
  Month	---	---
  %b	Abbreviated month name, based on the locale	Jan through Dec
  %B	Full month name, based on the locale	January through December
  %h	Abbreviated month name, based on the locale (an alias of %b)	Jan through Dec
  %m	Two digit representation of the month	01 (for January) through 12 (for December)
  Year	---	---
  %C	Two digit representation of the century (year divided by 100, truncated to an integer)	19 for the 20th Century
  %g	Two digit representation of the year going by ISO-8601:1988 standards (see %V)	Example: 09 for the week of January 6, 2009
  %G	The full four-digit version of %g	Example: 2008 for the week of January 3, 2009
  %y	Two digit representation of the year	Example: 09 for 2009, 79 for 1979
  %Y	Four digit representation for the year	Example: 2038
  Time	---	---
  %H	Two digit representation of the hour in 24-hour format	00 through 23
  %I	Two digit representation of the hour in 12-hour format	01 through 12
  %l (lower-case 'L')	Hour in 12-hour format, with a space preceeding single digits	1 through 12
  %M	Two digit representation of the minute	00 through 59
  %p	UPPER-CASE 'AM' or 'PM' based on the given time	Example: AM for 00:31, PM for 22:23
  %P	lower-case 'am' or 'pm' based on the given time	Example: am for 00:31, pm for 22:23
  %r	Same as "%I:%M:%S %p"	Example: 09:34:17 PM for 21:34:17
  %R	Same as "%H:%M"	Example: 00:35 for 12:35 AM, 16:44 for 4:44 PM
  %S	Two digit representation of the second	00 through 59
  %T	Same as "%H:%M:%S"	Example: 21:34:17 for 09:34:17 PM
  %X	Preferred time representation based on locale, without the date	Example: 03:59:16 or 15:59:16
  %z	Either the time zone offset from UTC or the abbreviation (depends on operating system)	Example: -0500 or EST for Eastern Time
  %Z	The time zone offset/abbreviation option NOT given by %z (depends on operating system)	Example: -0500 or EST for Eastern Time
  Time and Date Stamps	---	---
  %c	Preferred date and time stamp based on local	Example: Tue Feb 5 00:45:10 2009 for February 5, 2009 at 12:45:10 AM
  %D	Same as "%m/%d/%y"	Example: 02/05/09 for February 5, 2009
  %F	Same as "%Y-%m-%d" (commonly used in database datestamps)	Example: 2009-02-05 for February 5, 2009
  %s	Unix Epoch Time timestamp (same as the time() function)	Example: 305815200 for September 10, 1979 08:40:00 AM
  %x	Preferred date representation based on locale, without the time	Example: 02/05/09 for February 5, 2009
  Miscellaneous	---	---
  %n	A newline character ("\n")	---
  %t	A Tab character ("\t")	---
  %%	A literal percentage character ("%")	---

  Maximum length of this parameter is 1023 characters.
  Warning
  

  Contrary to ISO-9899:1999, Sun Solaris starts with Sunday as 1. As a result, %u may not function as described in this manual.
  Warning
  

  Windows only: The %e modifier is not supported in the Windows implementation of this function. To achieve this value, the %#d modifier can be used instead. The example below illustrates how to write a cross platform compatible function.
  Warning
  

  Mac OS X only: The %P modifier is not supported in the Mac OS X implementation of this function.