Format js Date functions

/*
* Date format 1.2.3
* (III) 2007-2009 Steven levithan
* Mit license
*
* Includes enhancements by scott trentda
* And Christopher
*
* Accept a date, a mask, or a date and a mask.
* Returns a version of the given date format.
* The default date is the current date/time.
* The default mask is dateformat. masks. default. */

Var dateformat = function (){
Var token =/d {1, 4} | m {1, 4} | yy (? : Yy )? | ([Hhmstt])? | [Losz] | "[^"] * "| '[^'] * '/g,
Timezone = /(? : [Pmcea] [sdp] t | (? : Pacific | mountain | central | eastern | Atlanta )(? : Standard | daylight | prevailing) time | (? : Gmt | utc )(? : [-+] D {4 })?) /G,
Timezoneclip =/[^-+ da-z]/g,
Pad = function (val, len ){
Val = string (val );
Len = len | 2;
While (val. length <len) val = "0" + val; return val ;}; // regexes and supporting functions are cached through closure return function (date, mask, utc) {var df = dateformat; // you can't provide utc if you skip other args (use the "utc:" mask prefix) if (arguments. length = 1 & object. prototype. tostring. call (date) = "[object string]" &! /D/. test (date) {mask = date; date = undefined;} // passing date through date applies date. parse, if necessary date = date? New date (date): new date; if (isnan (date) throw syntaxerror ("invalid date"); mask = string (df. masks [mask] | mask | df. masks ["default"]); // allow setting the utc argument via the mask if (mask. slice (0, 4) = "utc:") {mask = mask. slice (4); utc = true;} var _ = utc? "Getutc": "get", d = date [_ + "date"] (), d = date [_ + "day"] (), m = date [_ + "month"] (), y = date [_ + "fullyear"] (), h = date [_ + "hours"] (), m = date [_ + "minutes"] (), s = date [_ + "seconds"] (), l = date [_ + "milliseconds"] (), o = utc? 0: date. gettimezoneoffset (), flags = {d: d, dd: pad (d), ddd: df. i18n. daynames [d], dddd: df. i18n. daynames [d + 7], m: m + 1, mm: pad (m + 1), mmm: df. i18n. monthnames [m], mmmm: df. i18n. monthnames [m + 12], yy: string (y ). slice (2), yyyy: y, h: h % 12 | 12, hh: pad (h % 12 | 12), h: h, hh: pad (h), m: m, mm: pad (m), s: s, ss: pad (s), l: pad (l, 3), l: pad (l> 99? Math. round (l/10): l ),
T: h <12? "A": "p ",
Tt: h <12? "Am": "pm ",
T: h <12? "A": "p ",
Tt: h <12? "Am": "pm", z: utc? "Utc": (string (date ). match (timezone) | [""]). pop (). replace (timezoneclip, ""), o: (o> 0? "-": "+") + Pad (math. floor (math. abs (o)/60) * 100 + math. abs (o) % 60, 4 ),
S: ["th", "st", "nd", "rd"] [d % 10> 3? 0: (d % 100-d % 10! = 10) * d % 10]
};

Return mask. replace (token, function ($0 ){
Return $0 in flags? Flags [$0]: $0. slice (1, $0. length-1 );
});
};
}();

// Some common format strings
Dateformat. masks = {
"Default": "ddd mmm dd yyyy hh: mm: ss ",
Expiry date: "m/d/yy ",
Mediumdate: "mmm d, yyyy ",
Longdate: "mmmm d, yyyy ",
Fulldate: "dddd, mmmm d, yyyy ",
Processing time: "h: mm tt ",
Mediumtime: "h: mm: ss tt ",
Longtime: "h: mm: ss tt z ",
Isodate: "yyyy-mm-dd ",
Isotime: "hh: mm: ss ",
Isodatetime: "yyyy-mm-dd't'hh: mm: ss ",
Isoutcdatetime: "utc: yyyy-mm-dd't'hh: mm: ss 'Z '"
};

// Internationalization strings
Dateformat. i18n = {
Daynames :[
"Sun", "mon", "tue", "wed", "thu", "fri", "sat ",
"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
],
Monthnames :[
"Jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct ", "nov", "dec ",
"January", "February", "march", "Maid", "may", "June", "July", "August", "September", "October ", "November", "December"
]
};

// For convenience...
Date. prototype. format = function (mask, utc ){
Return dateformat (this, mask, utc );
};

Usage

 

Var now = new date ();

Now. format ("m/dd/yy ");

// Return, for example, 6/09/07

// It can also be used as an independent function
Dateformat (now, "dddd will, um, deputy director of the bureau, West yuan Year, High: mm: ss ");
// Saturday, August 1, June 9, 2007, 05:46:21 P.M.

// You can use multiple naming masks 1
Now. format ("isodatetime ");
// 2007-06-09t17: 46: 21

//... Or add your own
Dateformat. masks. hammertime = 'is hh: mm! "You can't touch this !";
Now. format ("hammertime ");
! Cannot touch this!

// When The Independent dateformat function is used,
// You can also provide a string date
Dateformat ("may June 9, 2007", "fulldate ");
// Saturday, January 1, June 9, 2007

// Note that if you do not include the arguments for masks,
// Dateformat. masks. default
Now. format ();
// Saturday June 9, 2007 17:46:21

// If you do not include the date parameter,
// The current date and time are used
Dateformat ();
// Saturday, December 17, June 9, 2007, 22 seconds

// You can also skip the date parameter (as long as you do not mask
// Contains any number). In this case, the current date/time is used
Dateformat ("long term ");
// 05:46:22 P.M. Eastern time

// Finally, you can convert the local time to utc time. Either through
// Actually acts as an additional parameter (in this case there is no reason to skip ):
Dateformat (now "old", true );
Now. format ("long term", true );
// Return of the two lines, for example, 10:46:21 P.M. Sunday