Joshua Gross
121 linhas
4.5 KiB
JavaScript
121 linhas
4.5 KiB
JavaScript
// Date Format 1.2.3\\
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// © 2007-2009 Steven Levithan ([[http://blog.stevenlevithan.com/archives/date-time-format|stevenlevithan.com]])\\
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// MIT license
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//
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// Includes enhancements by Scott Trenda
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// and Kris Kowal ([[http://cixar.com/~kris.kowal/|cixar.com/~kris.kowal/]])
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//
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// Accepts a date, a mask, or a date and a mask and returns a formatted version
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// of the given date.
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//
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// ==== Parameters ====
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// * {{{date}}} is a {{{Date()}}} object. If not specified, the date defaults to the
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// current date/time.
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// * {{{mask}}} is a string that defines the formatting of the date. Formatting
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// options can be found in the
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// [[http://blog.stevenlevithan.com/archives/date-time-format|Date Format]]
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// documentation. If not specified, the mask defaults to {{{dateFormat.masks.default}}}.
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var dateFormat = function() {
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var token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
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timezone = new RegExp('\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) ' +
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'(?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b',
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'g'),
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timezoneClip = /[^-+\dA-Z]/g,
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pad = function (val, len) {
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val = String(val);
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len = len || 2;
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while (val.length < len) val = "0" + val;
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return val;
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};
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// Regexes and supporting functions are cached through closure
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return function (date, mask, utc) {
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// You can't provide utc if you skip other args (use the "UTC:" mask prefix)
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if (arguments.length == 1 && Object.prototype.toString.call(date) ==
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"[object String]" && !/\d/.test(date)) {
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mask = date;
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date = undefined;
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}
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// Passing date through Date applies Date.parse, if necessary
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date = date ? new Date(date) : new Date;
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if (isNaN(date)) throw SyntaxError("invalid date");
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mask = String(dateFormat.masks[mask] ||
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mask ||
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dateFormat.masks["default"]);
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// Allow setting the utc argument via the mask
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if (mask.slice(0, 4) == "UTC:") {
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mask = mask.slice(4);
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utc = true;
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}
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var _ = utc ? "getUTC" : "get",
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d = date[_ + "Date"](),
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D = date[_ + "Day"](),
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m = date[_ + "Month"](),
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y = date[_ + "FullYear"](),
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H = date[_ + "Hours"](),
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M = date[_ + "Minutes"](),
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s = date[_ + "Seconds"](),
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L = date[_ + "Milliseconds"](),
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o = utc ? 0 : date.getTimezoneOffset(),
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flags = {
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d: d,
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dd: pad(d),
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ddd: AjaxIM.l10n.dayNames[D],
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dddd: AjaxIM.l10n.dayNames[D + 7],
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m: m + 1,
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mm: pad(m + 1),
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mmm: AjaxIM.l10n.monthNames[m],
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mmmm: AjaxIM.l10n.monthNames[m + 12],
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yy: String(y).slice(2),
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yyyy: y,
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h: H % 12 || 12,
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hh: pad(H % 12 || 12),
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H: H,
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HH: pad(H),
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M: M,
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MM: pad(M),
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s: s,
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ss: pad(s),
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l: pad(L, 3),
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L: pad(L > 99 ? Math.round(L / 10) : L),
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t: H < 12 ? "a" : "p",
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tt: H < 12 ? "am" : "pm",
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T: H < 12 ? "A" : "P",
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TT: H < 12 ? "AM" : "PM",
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Z: utc ? "UTC" :
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(String(date).match(timezone) || [""])
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.pop().replace(timezoneClip, ""),
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o: (o > 0 ? "-" : "+") +
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pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4),
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S: ["th", "st", "nd", "rd"][d % 10 > 3 ?
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0 :
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(d % 100 - d % 10 != 10) * d % 10]
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};
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return mask.replace(token, function ($0) {
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return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
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});
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};
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}();
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// Some common format strings
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dateFormat.masks = {
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"default": "ddd mmm dd yyyy HH:MM:ss",
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shortDate: "m/d/yy",
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mediumDate: "mmm d, yyyy",
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longDate: "mmmm d, yyyy",
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fullDate: "dddd, mmmm d, yyyy",
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shortTime: "h:MM TT",
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mediumTime: "h:MM:ss TT",
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longTime: "h:MM:ss TT Z",
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isoDate: "yyyy-mm-dd",
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isoTime: "HH:MM:ss",
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isoDateTime: "yyyy-mm-dd'T'HH:MM:ss",
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isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
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};
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