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/*
Date Format 1.1
(c) 2007 Steven Levithan <stevenlevithan.com>
MIT license
With code by Scott Trenda (Z and o flags, and enhanced brevity)
*/
/*** dateFormat
Accepts a date, a mask, or a date and a mask.
Returns a formatted version of the given date.
The date defaults to the current date/time.
The mask defaults ``"ddd mmm d yyyy HH:MM:ss"``.
*/
var dateFormater = function () {
var token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloZ]|"[^"]*"|'[^']*'/g,
timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
timezoneClip = /[^-+\dA-Z]/g,
pad = function (value, length) {
value = String(value);
length = parseInt(length) || 2;
while (value.length < length)
value = "0" + value;
return value;
};
// Regexes and supporting functions are cached through closure
return function (date, mask, utc) {
// Treat the first argument as a mask if it doesn't contain any numbers
if (
arguments.length == 1 &&
(typeof date == "string" || date instanceof String) &&
!/\d/.test(date)
) {
mask = date;
date = undefined;
}
date = date ? new Date(date) : new Date();
if (isNaN(date))
throw "invalid date";
var dF = dateFormater;
mask = String(dF.masks[mask] || mask || dF.masks["default"]);
if (utc) {
var d = date.getUTCDate(),
D = date.getUTCDay(),
m = date.getUTCMonth(),
y = date.getUTCFullYear(),
H = date.getUTCHours(),
M = date.getUTCMinutes(),
s = date.getUTCSeconds(),
L = date.getUTCMilliseconds(),
o = 0;
} else {
var d = date.getDate(),
D = date.getDay(),
m = date.getMonth(),
y = date.getFullYear(),
H = date.getHours(),
M = date.getMinutes(),
s = date.getSeconds(),
L = date.getMilliseconds(),
o = date.getTimezoneOffset();
}
var 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?"GMT":(String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""),
o: (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4)
};
return mask.replace(token, function ($0) {
return ($0 in flags) ? flags[$0] : $0.slice(1, $0.length - 1);
});
};
}();
// Some common format strings
dateFormater.masks = {
"default": "ddd mmm d yyyy HH:MM:ss",
shortDate: "m/d/yy",
mediumDate: "mmm d, yyyy",
longDate: "mmmm d, yyyy",
fullDate: "dddd, mmmm d, yyyy",
shortTime: "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",
isoFullDateTime: "yyyy-mm-dd'T'HH:MM:ss.lo"
};
// Internationalization strings
dateFormater.i18n = {
dayNames: [
"Sun", "Mon", "Tue", "Wed", "Thr", "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", "April", "May", "June", "July", "August", "September", "October", "November", "December"
]
};
// For convenience...
Date.prototype.format = function (mask, utc) {
return dateFormater(this, mask, utc);
}
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