strftime()

A JavaScript port of strftime(), a function to format the date and time.

Supported conversion specifications:

| Sequence | Description | Example | |----------|-------------|---------| | %a | Abbreviated name of the day of the week. | Fri | | %A | Full name of the day of the week. | Friday | | %b | Abbreviated month name. | Apr | | %B | Full month name. | April | | %c | UTC date and time representation for the current locale. | Sat 02 Apr 2022 00:15:00 GMT | | %C | Century number (year/100) as a 2-digit integer. | 20 | | %d | Day of the month as a decimal number (range 01 to 31). | 01 | | %e | Day of the month as a decimal number (range 1 to 31). | 1 | | %F | ISO 8601 date format (equivalent to %Y-%m-%d). | 2022-04-01 | | %g | Like %G, but without century, that is, with a 2-digit year. | 22 | | %G | ISO 8601 week-based year with century as a decimal number. The 4-digit year corresponds to the ISO week number (see %V). This has the same format and value as %Y, except that if the ISO week number belongs to the previous or next year, that year is used instead. | 2022 | | %H | Hour as a decimal number using a 24-hour clock (range 00 to 23). See also %k. | 17 | | %I | Hour as a decimal number using a 12-hour clock (range 01 to 12). See also %l. | 05 | | %j | Day of the year as a decimal number (range 001 to 366). | 091 | | %k | Hour as a decimal number using a 24-hour clock (range 0 to 23). See also %H. | 17 | | %l | Hour as a decimal number using a 12-hour clock (range 1 to 12). See also %I. | 5 | | %m | Month as a decimal number (range 01 to 12). | 04 | | %n | Month as a decimal number (range 1 to 12). | 4 | | %M | Minute as a decimal number (range 00 to 59). | 15 | | %p | Either "AM" or "PM" according to the given time value. Noon is treated as "PM" and midnight as "AM". | PM | | %P | Like %p but in lowercase ("am" or "pm"). | pm | | %s | Number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). | 1648858500 | | %S | Second as a decimal number (range 00 to 59). | 00 | | %u | Day of the week as a decimal (range 1 to 7), Monday being 1. See also %w. | 5 | | %V | ISO 8601 week number of the current year as a decimal number (range 01 to 53), where week 1 is the first week that has at least 4 days in the new year (that is, the first Thursday). | 13 | | %w | Day of the week as a decimal (range 0 to 6), Sunday being 0. See also %u. | 5 | | %x | Preferred date representation for the current locale without the time. | 4/1/2022 | | %X | Preferred time representation for the current locale without the date. | 5:15:00 PM | | %y | Year as a decimal number without a century (range 00 to 99). | 22 | | %Y | Year as a decimal number including the century. | 2022 | | %z | The +hhmm or -hhmm numeric timezone (that is, the hour and minute offset from UTC). | -0800 | | %Z | Timezone name. | Pacific Standard Time | | %Zs | Timezone short name (abbreviation). | PST |

Compatibility notes:

• %c - formatted string is slightly different
• %D - not implemented (use %m/%d/%y or %d/%m/%y)
• %e - space is not added
• %E - not implemented
• %h - not implemented (use %b)
• %k - space is not added
• %n - like %m, but no leading zero (use \n for newline)
• %O - not implemented
• %r - not implemented (use %I:%M:%S %p)
• %R - not implemented (use %H:%M)
• %t - not implemented (use \t)
• %T - not implemented (use %H:%M:%S)
• %U - not implemented
• %W - not implemented
• %+ - not implemented
• %% - not implemented (use %)

Sample usage:

// Returns "15-09-2016 16:20"
strftime('%d-%m-%Y %H:%M');

// You can optionally pass it a Date object
// Returns "01-01-2016 21:30"
strftime('%d-%m-%Y %H:%M', new Date('Jan 1, 2016 9:30 PM'));