strftime

Ruby-like strftime method implementation in Javascript with / without the percentage notation.

The formatting is based on strftime.org

Usage

const date = new Date();
strftime(date, 'I:M p - A') // => 09:32 AM - Thursday
strftime(date, 'm/b/Y')     // => 1/Jan/2018
strftime(date, 'do B Y')    // => 18th January 2018

strftimeWithText(date, '%I:%M %p - %A') // => 09:32 AM - Thursday
strftimeWithText(date, '%m/%b/%Y')     // => 1/Jan/2018
strftimeWithText(date, '%d%o %B %Y')    // => 18th January 2018

Use strftime when you want a date or time or both only. Use strftimeWithText when you want your format string to contain text aside from the specifiers (take look at the Warning).

Warning

Don't use words inside the strftime function example:

const date = new Date();
strftime(date, 'The time is: I:M p') 
// This call will cause in error, this function only takes specifiers

Instead use strftimeWithText function that takes the % sign example:

const date = new Date();
strftimeWithText(date, 'The time is: %I:%M %p') 
// This is a fine call for this function 

Available Specifiers

Date

a => Abbreviated weekday name (e.g., Sun, Mon) Sun A => Full weekday name (e.g., Sunday, Monday) Sunday w => Day of the week (1-7, where 1 is Sunday) q => Padded day of the week (01-07) e => Day of the month (1-31) d => Padded day of the month (01-31) b => Short month name (e.g., Jan) B => Full month name (e.g., January) m => Month number (1-12) N => Padded month number (01-12) y => Short year (e.g., 22 for 2022) Y => Full year (e.g., 2022) o => Ordinal day of the month (st, nd, rd, th) x => Localized date string (e.g., "6/22/2023")

Time

H => Hours (0-23) h => Padded hours (00-23) I => 12-hour format (01-12) p => AM/PM M => Minutes (0-59) i => Padded minutes (00-59) S => Seconds (0-59) s => Padded seconds (00-59) f => Milliseconds X => Localized time string (e.g., "1:45:30 PM")

Date and Time

c => Date and time string (e.g., "Thu Jun 22 2023 - 13:45:30 GMT+0100 (GMT+01:00)")

NOTE

All these specifiers are available for strftime and strftimeWithText, The only difference is with using the % sign. strftime => no percentage sign strftimeWithText => with percentage sign