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/* |
* Ext JS Library 2.0.2 |
* Copyright(c) 2006-2008, Ext JS, LLC. |
* licensing@extjs.com |
* |
* http://extjs.com/license |
*/ |
|
/** |
* @class Date |
* |
* The date parsing and format syntax is a subset of |
* <a href="http://www.php.net/date">PHP's date() function</a>, and the formats that are |
* supported will provide results equivalent to their PHP versions. |
* |
* The following is a list of all currently supported formats: |
*<pre> |
Format Description Example returned values |
------ ----------------------------------------------------------------------- ----------------------- |
d Day of the month, 2 digits with leading zeros 01 to 31 |
D A short textual representation of the day of the week Mon to Sun |
j Day of the month without leading zeros 1 to 31 |
l A full textual representation of the day of the week Sunday to Saturday |
N ISO-8601 numeric representation of the day of the week 1 (for Monday) through 7 (for Sunday) |
S English ordinal suffix for the day of the month, 2 characters st, nd, rd or th. Works well with j |
w Numeric representation of the day of the week 0 (for Sunday) to 6 (for Saturday) |
z The day of the year (starting from 0) 0 to 364 (365 in leap years) |
W ISO-8601 week number of year, weeks starting on Monday 01 to 53 |
F A full textual representation of a month, such as January or March January to December |
m Numeric representation of a month, with leading zeros 01 to 12 |
M A short textual representation of a month Jan to Dec |
n Numeric representation of a month, without leading zeros 1 to 12 |
t Number of days in the given month 28 to 31 |
L Whether it's a leap year 1 if it is a leap year, 0 otherwise. |
o ISO-8601 year number (identical to (Y), but if the ISO week number (W) Examples: 1998 or 2004 |
belongs to the previous or next year, that year is used instead) |
Y A full numeric representation of a year, 4 digits Examples: 1999 or 2003 |
y A two digit representation of a year Examples: 99 or 03 |
a Lowercase Ante meridiem and Post meridiem am or pm |
A Uppercase Ante meridiem and Post meridiem AM or PM |
g 12-hour format of an hour without leading zeros 1 to 12 |
G 24-hour format of an hour without leading zeros 0 to 23 |
h 12-hour format of an hour with leading zeros 01 to 12 |
H 24-hour format of an hour with leading zeros 00 to 23 |
i Minutes, with leading zeros 00 to 59 |
s Seconds, with leading zeros 00 to 59 |
u Milliseconds, with leading zeros 001 to 999 |
O Difference to Greenwich time (GMT) in hours and minutes Example: +1030 |
P Difference to Greenwich time (GMT) with colon between hours and minutes Example: -08:00 |
T Timezone abbreviation of the machine running the code Examples: EST, MDT, PDT ... |
Z Timezone offset in seconds (negative if west of UTC, positive if east) -43200 to 50400 |
c ISO 8601 date 2007-04-17T15:19:21+08:00 |
U Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) 1193432466 or -2138434463 |
</pre> |
* |
* Example usage (note that you must escape format specifiers with '\\' to render them as character literals): |
* <pre><code> |
// Sample date: |
// 'Wed Jan 10 2007 15:05:01 GMT-0600 (Central Standard Time)' |
|
var dt = new Date('1/10/2007 03:05:01 PM GMT-0600'); |
document.write(dt.format('Y-m-d')); // 2007-01-10 |
document.write(dt.format('F j, Y, g:i a')); // January 10, 2007, 3:05 pm |
document.write(dt.format('l, \\t\\he jS of F Y h:i:s A')); // Wednesday, the 10th of January 2007 03:05:01 PM |
</code></pre> |
* |
* Here are some standard date/time patterns that you might find helpful. They |
* are not part of the source of Date.js, but to use them you can simply copy this |
* block of code into any script that is included after Date.js and they will also become |
* globally available on the Date object. Feel free to add or remove patterns as needed in your code. |
* <pre><code> |
Date.patterns = { |
ISO8601Long:"Y-m-d H:i:s", |
ISO8601Short:"Y-m-d", |
ShortDate: "n/j/Y", |
LongDate: "l, F d, Y", |
FullDateTime: "l, F d, Y g:i:s A", |
MonthDay: "F d", |
ShortTime: "g:i A", |
LongTime: "g:i:s A", |
SortableDateTime: "Y-m-d\\TH:i:s", |
UniversalSortableDateTime: "Y-m-d H:i:sO", |
YearMonth: "F, Y" |
}; |
</code></pre> |
* |
* Example usage: |
* <pre><code> |
var dt = new Date(); |
document.write(dt.format(Date.patterns.ShortDate)); |
</code></pre> |
*/ |
|
/* |
* Most of the date-formatting functions below are the excellent work of Baron Schwartz. |
* They generate precompiled functions from date formats instead of parsing and |
* processing the pattern every time you format a date. These functions are available |
* on every Date object (any javascript function). |
* |
* The original article and download are here: |
* http://www.xaprb.com/blog/2005/12/12/javascript-closures-for-runtime-efficiency/ |
* |
*/ |
|
// private |
Date.parseFunctions = {count:0}; |
// private |
Date.parseRegexes = []; |
// private |
Date.formatFunctions = {count:0}; |
|
// private |
Date.prototype.dateFormat = function(format) { |
if (Date.formatFunctions[format] == null) { |
Date.createNewFormat(format); |
} |
var func = Date.formatFunctions[format]; |
return this[func](); |
}; |
|
|
/** |
* Formats a date given the supplied format string. |
* @param {String} format The format string. |
* @return {String} The formatted date. |
* @method |
*/ |
Date.prototype.format = Date.prototype.dateFormat; |
|
// private |
Date.createNewFormat = function(format) { |
var funcName = "format" + Date.formatFunctions.count++; |
Date.formatFunctions[format] = funcName; |
var code = "Date.prototype." + funcName + " = function(){return "; |
var special = false; |
var ch = ''; |
for (var i = 0; i < format.length; ++i) { |
ch = format.charAt(i); |
if (!special && ch == "\\") { |
special = true; |
} |
else if (special) { |
special = false; |
code += "'" + String.escape(ch) + "' + "; |
} |
else { |
code += Date.getFormatCode(ch); |
} |
} |
eval(code.substring(0, code.length - 3) + ";}"); |
}; |
|
// private |
Date.getFormatCode = function(character) { |
switch (character) { |
case "d": |
return "String.leftPad(this.getDate(), 2, '0') + "; |
case "D": |
return "Date.getShortDayName(this.getDay()) + "; // get L10n short day name |
case "j": |
return "this.getDate() + "; |
case "l": |
return "Date.dayNames[this.getDay()] + "; |
case "N": |
return "(this.getDay() ? this.getDay() : 7) + "; |
case "S": |
return "this.getSuffix() + "; |
case "w": |
return "this.getDay() + "; |
case "z": |
return "this.getDayOfYear() + "; |
case "W": |
return "String.leftPad(this.getWeekOfYear(), 2, '0') + "; |
case "F": |
return "Date.monthNames[this.getMonth()] + "; |
case "m": |
return "String.leftPad(this.getMonth() + 1, 2, '0') + "; |
case "M": |
return "Date.getShortMonthName(this.getMonth()) + "; // get L10n short month name |
case "n": |
return "(this.getMonth() + 1) + "; |
case "t": |
return "this.getDaysInMonth() + "; |
case "L": |
return "(this.isLeapYear() ? 1 : 0) + "; |
case "o": |
return "(this.getFullYear() + (this.getWeekOfYear() == 1 && this.getMonth() > 0 ? +1 : (this.getWeekOfYear() >= 52 && this.getMonth() < 11 ? -1 : 0))) + "; |
case "Y": |
return "this.getFullYear() + "; |
case "y": |
return "('' + this.getFullYear()).substring(2, 4) + "; |
case "a": |
return "(this.getHours() < 12 ? 'am' : 'pm') + "; |
case "A": |
return "(this.getHours() < 12 ? 'AM' : 'PM') + "; |
case "g": |
return "((this.getHours() % 12) ? this.getHours() % 12 : 12) + "; |
case "G": |
return "this.getHours() + "; |
case "h": |
return "String.leftPad((this.getHours() % 12) ? this.getHours() % 12 : 12, 2, '0') + "; |
case "H": |
return "String.leftPad(this.getHours(), 2, '0') + "; |
case "i": |
return "String.leftPad(this.getMinutes(), 2, '0') + "; |
case "s": |
return "String.leftPad(this.getSeconds(), 2, '0') + "; |
case "u": |
return "String.leftPad(this.getMilliseconds(), 3, '0') + "; |
case "O": |
return "this.getGMTOffset() + "; |
case "P": |
return "this.getGMTOffset(true) + "; |
case "T": |
return "this.getTimezone() + "; |
case "Z": |
return "(this.getTimezoneOffset() * -60) + "; |
case "c": |
for (var df = Date.getFormatCode, c = "Y-m-dTH:i:sP", code = "", i = 0, l = c.length; i < l; ++i) { |
var e = c.charAt(i); |
code += e == "T" ? "'T' + " : df(e); // treat T as a literal |
} |
return code; |
case "U": |
return "Math.round(this.getTime() / 1000) + "; |
default: |
return "'" + String.escape(character) + "' + "; |
} |
}; |
|
/** |
* Parses the passed string using the specified format. Note that this function expects dates in normal calendar |
* format, meaning that months are 1-based (1 = January) and not zero-based like in JavaScript dates. Any part of |
* the date format that is not specified will default to the current date value for that part. Time parts can also |
* be specified, but default to 0. Keep in mind that the input date string must precisely match the specified format |
* string or the parse operation will fail. |
* Example Usage: |
<pre><code> |
//dt = Fri May 25 2007 (current date) |
var dt = new Date(); |
|
//dt = Thu May 25 2006 (today's month/day in 2006) |
dt = Date.parseDate("2006", "Y"); |
|
//dt = Sun Jan 15 2006 (all date parts specified) |
dt = Date.parseDate("2006-01-15", "Y-m-d"); |
|
//dt = Sun Jan 15 2006 15:20:01 GMT-0600 (CST) |
dt = Date.parseDate("2006-01-15 3:20:01 PM", "Y-m-d h:i:s A" ); |
</code></pre> |
* @param {String} input The unparsed date as a string. |
* @param {String} format The format the date is in. |
* @return {Date} The parsed date. |
* @static |
*/ |
Date.parseDate = function(input, format) { |
if (Date.parseFunctions[format] == null) { |
Date.createParser(format); |
} |
var func = Date.parseFunctions[format]; |
return Date[func](input); |
}; |
|
// private |
Date.createParser = function(format) { |
var funcName = "parse" + Date.parseFunctions.count++; |
var regexNum = Date.parseRegexes.length; |
var currentGroup = 1; |
Date.parseFunctions[format] = funcName; |
|
var code = "Date." + funcName + " = function(input){\n" |
+ "var y = -1, m = -1, d = -1, h = -1, i = -1, s = -1, ms = -1, o, z, u, v;\n" |
+ "input = String(input);var d = new Date();\n" |
+ "y = d.getFullYear();\n" |
+ "m = d.getMonth();\n" |
+ "d = d.getDate();\n" |
+ "var results = input.match(Date.parseRegexes[" + regexNum + "]);\n" |
+ "if (results && results.length > 0) {"; |
var regex = ""; |
|
var special = false; |
var ch = ''; |
for (var i = 0; i < format.length; ++i) { |
ch = format.charAt(i); |
if (!special && ch == "\\") { |
special = true; |
} |
else if (special) { |
special = false; |
regex += String.escape(ch); |
} |
else { |
var obj = Date.formatCodeToRegex(ch, currentGroup); |
currentGroup += obj.g; |
regex += obj.s; |
if (obj.g && obj.c) { |
code += obj.c; |
} |
} |
} |
|
code += "if (u)\n" |
+ "{v = new Date(u * 1000);}" // give top priority to UNIX time |
+ "else if (y >= 0 && m >= 0 && d > 0 && h >= 0 && i >= 0 && s >= 0 && ms >= 0)\n" |
+ "{v = new Date(y, m, d, h, i, s, ms);}\n" |
+ "else if (y >= 0 && m >= 0 && d > 0 && h >= 0 && i >= 0 && s >= 0)\n" |
+ "{v = new Date(y, m, d, h, i, s);}\n" |
+ "else if (y >= 0 && m >= 0 && d > 0 && h >= 0 && i >= 0)\n" |
+ "{v = new Date(y, m, d, h, i);}\n" |
+ "else if (y >= 0 && m >= 0 && d > 0 && h >= 0)\n" |
+ "{v = new Date(y, m, d, h);}\n" |
+ "else if (y >= 0 && m >= 0 && d > 0)\n" |
+ "{v = new Date(y, m, d);}\n" |
+ "else if (y >= 0 && m >= 0)\n" |
+ "{v = new Date(y, m);}\n" |
+ "else if (y >= 0)\n" |
+ "{v = new Date(y);}\n" |
+ "}return (v && (z || o))?\n" // favour UTC offset over GMT offset |
+ " (z ? v.add(Date.SECOND, (v.getTimezoneOffset() * 60) + (z*1)) :\n" // reset to UTC, then add offset |
+ " v.add(Date.HOUR, (v.getGMTOffset() / 100) + (o / -100))) : v\n" // reset to GMT, then add offset |
+ ";}"; |
|
Date.parseRegexes[regexNum] = new RegExp("^" + regex + "$", "i"); |
eval(code); |
}; |
|
// private |
Date.formatCodeToRegex = function(character, currentGroup) { |
/* |
* currentGroup = position in regex result array |
* g = calculation group (0 or 1. only group 1 contributes to date calculations.) |
* c = calculation method (required for group 1. null for group 0.) |
* s = regex string |
*/ |
switch (character) { |
case "d": |
return {g:1, |
c:"d = parseInt(results[" + currentGroup + "], 10);\n", |
s:"(\\d{2})"}; // day of month with leading zeroes (01 - 31) |
case "D": |
for (var a = [], i = 0; i < 7; a.push(Date.getShortDayName(i)), ++i); // get L10n short day names |
return {g:0, |
c:null, |
s:"(?:" + a.join("|") +")"}; |
case "j": |
return {g:1, |
c:"d = parseInt(results[" + currentGroup + "], 10);\n", |
s:"(\\d{1,2})"}; // day of month without leading zeroes (1 - 31) |
case "l": |
return {g:0, |
c:null, |
s:"(?:" + Date.dayNames.join("|") + ")"}; |
case "N": |
return {g:0, |
c:null, |
s:"[1-7]"}; // ISO-8601 day number (1 (monday) - 7 (sunday)) |
case "S": |
return {g:0, |
c:null, |
s:"(?:st|nd|rd|th)"}; |
case "w": |
return {g:0, |
c:null, |
s:"[0-6]"}; // javascript day number (0 (sunday) - 6 (saturday)) |
case "z": |
return {g:0, |
c:null, |
s:"(?:\\d{1,3}"}; // day of the year (0 - 364 (365 in leap years)) |
case "W": |
return {g:0, |
c:null, |
s:"(?:\\d{2})"}; // ISO-8601 week number (with leading zero) |
case "F": |
return {g:1, |
c:"m = parseInt(Date.getMonthNumber(results[" + currentGroup + "]), 10);\n", // get L10n month number |
s:"(" + Date.monthNames.join("|") + ")"}; |
case "m": |
return {g:1, |
c:"m = parseInt(results[" + currentGroup + "], 10) - 1;\n", |
s:"(\\d{2})"}; // month number with leading zeros (01 - 12) |
case "M": |
for (var a = [], i = 0; i < 12; a.push(Date.getShortMonthName(i)), ++i); // get L10n short month names |
return {g:1, |
c:"m = parseInt(Date.getMonthNumber(results[" + currentGroup + "]), 10);\n", // get L10n month number |
s:"(" + a.join("|") + ")"}; |
case "n": |
return {g:1, |
c:"m = parseInt(results[" + currentGroup + "], 10) - 1;\n", |
s:"(\\d{1,2})"}; // month number without leading zeros (1 - 12) |
case "t": |
return {g:0, |
c:null, |
s:"(?:\\d{2})"}; // no. of days in the month (28 - 31) |
case "L": |
return {g:0, |
c:null, |
s:"(?:1|0)"}; |
case "o": |
case "Y": |
return {g:1, |
c:"y = parseInt(results[" + currentGroup + "], 10);\n", |
s:"(\\d{4})"}; // 4-digit year |
case "y": |
return {g:1, |
c:"var ty = parseInt(results[" + currentGroup + "], 10);\n" |
+ "y = ty > Date.y2kYear ? 1900 + ty : 2000 + ty;\n", |
s:"(\\d{1,2})"}; // 2-digit year |
case "a": |
return {g:1, |
c:"if (results[" + currentGroup + "] == 'am') {\n" |
+ "if (h == 12) { h = 0; }\n" |
+ "} else { if (h < 12) { h += 12; }}", |
s:"(am|pm)"}; |
case "A": |
return {g:1, |
c:"if (results[" + currentGroup + "] == 'AM') {\n" |
+ "if (h == 12) { h = 0; }\n" |
+ "} else { if (h < 12) { h += 12; }}", |
s:"(AM|PM)"}; |
case "g": |
case "G": |
return {g:1, |
c:"h = parseInt(results[" + currentGroup + "], 10);\n", |
s:"(\\d{1,2})"}; // 24-hr format of an hour without leading zeroes (0 - 23) |
case "h": |
case "H": |
return {g:1, |
c:"h = parseInt(results[" + currentGroup + "], 10);\n", |
s:"(\\d{2})"}; // 24-hr format of an hour with leading zeroes (00 - 23) |
case "i": |
return {g:1, |
c:"i = parseInt(results[" + currentGroup + "], 10);\n", |
s:"(\\d{2})"}; // minutes with leading zeros (00 - 59) |
case "s": |
return {g:1, |
c:"s = parseInt(results[" + currentGroup + "], 10);\n", |
s:"(\\d{2})"}; // seconds with leading zeros (00 - 59) |
case "u": |
return {g:1, |
c:"ms = parseInt(results[" + currentGroup + "], 10);\n", |
s:"(\\d{3})"}; // milliseconds with leading zeros (000 - 999) |
case "O": |
return {g:1, |
c:[ |
"o = results[", currentGroup, "];\n", |
"var sn = o.substring(0,1);\n", // get + / - sign |
"var hr = o.substring(1,3)*1 + Math.floor(o.substring(3,5) / 60);\n", // get hours (performs minutes-to-hour conversion also, just in case) |
"var mn = o.substring(3,5) % 60;\n", // get minutes |
"o = ((-12 <= (hr*60 + mn)/60) && ((hr*60 + mn)/60 <= 14))?\n", // -12hrs <= GMT offset <= 14hrs |
" (sn + String.leftPad(hr, 2, '0') + String.leftPad(mn, 2, '0')) : null;\n" |
].join(""), |
s: "([+\-]\\d{4})"}; // GMT offset in hrs and mins |
case "P": |
return {g:1, |
c:[ |
"o = results[", currentGroup, "];\n", |
"var sn = o.substring(0,1);\n", // get + / - sign |
"var hr = o.substring(1,3)*1 + Math.floor(o.substring(4,6) / 60);\n", // get hours (performs minutes-to-hour conversion also, just in case) |
"var mn = o.substring(4,6) % 60;\n", // get minutes |
"o = ((-12 <= (hr*60 + mn)/60) && ((hr*60 + mn)/60 <= 14))?\n", // -12hrs <= GMT offset <= 14hrs |
" (sn + String.leftPad(hr, 2, '0') + String.leftPad(mn, 2, '0')) : null;\n" |
].join(""), |
s: "([+\-]\\d{2}:\\d{2})"}; // GMT offset in hrs and mins (with colon separator) |
case "T": |
return {g:0, |
c:null, |
s:"[A-Z]{1,4}"}; // timezone abbrev. may be between 1 - 4 chars |
case "Z": |
return {g:1, |
c:"z = results[" + currentGroup + "] * 1;\n" // -43200 <= UTC offset <= 50400 |
+ "z = (-43200 <= z && z <= 50400)? z : null;\n", |
s:"([+\-]?\\d{1,5})"}; // leading '+' sign is optional for UTC offset |
case "c": |
var df = Date.formatCodeToRegex, calc = []; |
var arr = [df("Y", 1), df("m", 2), df("d", 3), df("h", 4), df("i", 5), df("s", 6), df("P", 7)]; |
for (var i = 0, l = arr.length; i < l; ++i) { |
calc.push(arr[i].c); |
} |
return {g:1, |
c:calc.join(""), |
s:arr[0].s + "-" + arr[1].s + "-" + arr[2].s + "T" + arr[3].s + ":" + arr[4].s + ":" + arr[5].s + arr[6].s}; |
case "U": |
return {g:1, |
c:"u = parseInt(results[" + currentGroup + "], 10);\n", |
s:"(-?\\d+)"}; // leading minus sign indicates seconds before UNIX epoch |
default: |
return {g:0, |
c:null, |
s:Ext.escapeRe(character)}; |
} |
}; |
|
/** |
* Get the timezone abbreviation of the current date (equivalent to the format specifier 'T'). |
* |
* Note: The date string returned by the javascript Date object's toString() method varies |
* between browsers (e.g. FF vs IE) and system region settings (e.g. IE in Asia vs IE in America). |
* For a given date string e.g. "Thu Oct 25 2007 22:55:35 GMT+0800 (Malay Peninsula Standard Time)", |
* getTimezone() first tries to get the timezone abbreviation from between a pair of parentheses |
* (which may or may not be present), failing which it proceeds to get the timezone abbreviation |
* from the GMT offset portion of the date string. |
* @return {String} The abbreviated timezone name (e.g. 'CST', 'PDT', 'EDT', 'MPST' ...). |
*/ |
Date.prototype.getTimezone = function() { |
// the following list shows the differences between date strings from different browsers on a WinXP SP2 machine from an Asian locale: |
// |
// Opera : "Thu, 25 Oct 2007 22:53:45 GMT+0800" -- shortest (weirdest) date string of the lot |
// Safari : "Thu Oct 25 2007 22:55:35 GMT+0800 (Malay Peninsula Standard Time)" -- value in parentheses always gives the correct timezone (same as FF) |
// FF : "Thu Oct 25 2007 22:55:35 GMT+0800 (Malay Peninsula Standard Time)" -- value in parentheses always gives the correct timezone |
// IE : "Thu Oct 25 22:54:35 UTC+0800 2007" -- (Asian system setting) look for 3-4 letter timezone abbrev |
// IE : "Thu Oct 25 17:06:37 PDT 2007" -- (American system setting) look for 3-4 letter timezone abbrev |
// |
// this crazy regex attempts to guess the correct timezone abbreviation despite these differences. |
// step 1: (?:\((.*)\) -- find timezone in parentheses |
// step 2: ([A-Z]{1,4})(?:[\-+][0-9]{4})?(?: -?\d+)?) -- if nothing was found in step 1, find timezone from timezone offset portion of date string |
// step 3: remove all non uppercase characters found in step 1 and 2 |
return this.toString().replace(/^.* (?:\((.*)\)|([A-Z]{1,4})(?:[\-+][0-9]{4})?(?: -?\d+)?)$/, "$1$2").replace(/[^A-Z]/g, ""); |
}; |
|
/** |
* Get the offset from GMT of the current date (equivalent to the format specifier 'O'). |
* @param {Boolean} colon true to separate the hours and minutes with a colon (defaults to false). |
* @return {String} The 4-character offset string prefixed with + or - (e.g. '-0600'). |
*/ |
Date.prototype.getGMTOffset = function(colon) { |
return (this.getTimezoneOffset() > 0 ? "-" : "+") |
+ String.leftPad(Math.abs(Math.floor(this.getTimezoneOffset() / 60)), 2, "0") |
+ (colon ? ":" : "") |
+ String.leftPad(this.getTimezoneOffset() % 60, 2, "0"); |
}; |
|
/** |
* Get the numeric day number of the year, adjusted for leap year. |
* @return {Number} 0 to 364 (365 in leap years). |
*/ |
Date.prototype.getDayOfYear = function() { |
var num = 0; |
Date.daysInMonth[1] = this.isLeapYear() ? 29 : 28; |
for (var i = 0; i < this.getMonth(); ++i) { |
num += Date.daysInMonth[i]; |
} |
return num + this.getDate() - 1; |
}; |
|
/** |
* Get the numeric ISO-8601 week number of the year. |
* (equivalent to the format specifier 'W', but without a leading zero). |
* @return {Number} 1 to 53 |
*/ |
Date.prototype.getWeekOfYear = function() { |
// adapted from http://www.merlyn.demon.co.uk/weekcalc.htm |
var ms1d = 864e5; // milliseconds in a day |
var ms7d = 7 * ms1d; // milliseconds in a week |
var DC3 = Date.UTC(this.getFullYear(), this.getMonth(), this.getDate() + 3) / ms1d; // an Absolute Day Number |
var AWN = Math.floor(DC3 / 7); // an Absolute Week Number |
var Wyr = new Date(AWN * ms7d).getUTCFullYear(); |
return AWN - Math.floor(Date.UTC(Wyr, 0, 7) / ms7d) + 1; |
}; |
|
/** |
* Whether or not the current date is in a leap year. |
* @return {Boolean} True if the current date is in a leap year, else false. |
*/ |
Date.prototype.isLeapYear = function() { |
var year = this.getFullYear(); |
return !!((year & 3) == 0 && (year % 100 || (year % 400 == 0 && year))); |
}; |
|
/** |
* Get the first day of the current month, adjusted for leap year. The returned value |
* is the numeric day index within the week (0-6) which can be used in conjunction with |
* the {@link #monthNames} array to retrieve the textual day name. |
* Example: |
*<pre><code> |
var dt = new Date('1/10/2007'); |
document.write(Date.dayNames[dt.getFirstDayOfMonth()]); //output: 'Monday' |
</code></pre> |
* @return {Number} The day number (0-6). |
*/ |
Date.prototype.getFirstDayOfMonth = function() { |
var day = (this.getDay() - (this.getDate() - 1)) % 7; |
return (day < 0) ? (day + 7) : day; |
}; |
|
/** |
* Get the last day of the current month, adjusted for leap year. The returned value |
* is the numeric day index within the week (0-6) which can be used in conjunction with |
* the {@link #monthNames} array to retrieve the textual day name. |
* Example: |
*<pre><code> |
var dt = new Date('1/10/2007'); |
document.write(Date.dayNames[dt.getLastDayOfMonth()]); //output: 'Wednesday' |
</code></pre> |
* @return {Number} The day number (0-6). |
*/ |
Date.prototype.getLastDayOfMonth = function() { |
var day = (this.getDay() + (Date.daysInMonth[this.getMonth()] - this.getDate())) % 7; |
return (day < 0) ? (day + 7) : day; |
}; |
|
|
/** |
* Get the date of the first day of the month in which this date resides. |
* @return {Date} |
*/ |
Date.prototype.getFirstDateOfMonth = function() { |
return new Date(this.getFullYear(), this.getMonth(), 1); |
}; |
|
/** |
* Get the date of the last day of the month in which this date resides. |
* @return {Date} |
*/ |
Date.prototype.getLastDateOfMonth = function() { |
return new Date(this.getFullYear(), this.getMonth(), this.getDaysInMonth()); |
}; |
/** |
* Get the number of days in the current month, adjusted for leap year. |
* @return {Number} The number of days in the month. |
*/ |
Date.prototype.getDaysInMonth = function() { |
Date.daysInMonth[1] = this.isLeapYear() ? 29 : 28; |
return Date.daysInMonth[this.getMonth()]; |
}; |
|
/** |
* Get the English ordinal suffix of the current day (equivalent to the format specifier 'S'). |
* @return {String} 'st, 'nd', 'rd' or 'th'. |
*/ |
Date.prototype.getSuffix = function() { |
switch (this.getDate()) { |
case 1: |
case 21: |
case 31: |
return "st"; |
case 2: |
case 22: |
return "nd"; |
case 3: |
case 23: |
return "rd"; |
default: |
return "th"; |
} |
}; |
|
// private |
Date.daysInMonth = [31,28,31,30,31,30,31,31,30,31,30,31]; |
|
/** |
* An array of textual month names. |
* Override these values for international dates, for example... |
* Date.monthNames = ['JanInYourLang', 'FebInYourLang', ...]; |
* @type Array |
* @static |
*/ |
Date.monthNames = |
["January", |
"February", |
"March", |
"April", |
"May", |
"June", |
"July", |
"August", |
"September", |
"October", |
"November", |
"December"]; |
|
/** |
* Get the short month name for the given month number. |
* Override this function for international dates. |
* @param {Number} month A zero-based javascript month number. |
* @return {String} The short month name. |
* @static |
*/ |
Date.getShortMonthName = function(month) { |
return Date.monthNames[month].substring(0, 3); |
} |
|
/** |
* An array of textual day names. |
* Override these values for international dates, for example... |
* Date.dayNames = ['SundayInYourLang', 'MondayInYourLang', ...]; |
* @type Array |
* @static |
*/ |
Date.dayNames = |
["Sunday", |
"Monday", |
"Tuesday", |
"Wednesday", |
"Thursday", |
"Friday", |
"Saturday"]; |
|
/** |
* Get the short day name for the given day number. |
* Override this function for international dates. |
* @param {Number} day A zero-based javascript day number. |
* @return {String} The short day name. |
* @static |
*/ |
Date.getShortDayName = function(day) { |
return Date.dayNames[day].substring(0, 3); |
} |
|
// private |
Date.y2kYear = 50; |
|
/** |
* An object hash of zero-based javascript month numbers (with short month names as keys. note: keys are case-sensitive). |
* Override these values for international dates, for example... |
* Date.monthNumbers = {'ShortJanNameInYourLang':0, 'ShortFebNameInYourLang':1, ...}; |
* @type Object |
* @static |
*/ |
Date.monthNumbers = { |
Jan:0, |
Feb:1, |
Mar:2, |
Apr:3, |
May:4, |
Jun:5, |
Jul:6, |
Aug:7, |
Sep:8, |
Oct:9, |
Nov:10, |
Dec:11}; |
|
/** |
* Get the zero-based javascript month number for the given short/full month name. |
* Override this function for international dates. |
* @param {String} name The short/full month name. |
* @return {Number} The zero-based javascript month number. |
* @static |
*/ |
Date.getMonthNumber = function(name) { |
// handle camel casing for english month names (since the keys for the Date.monthNumbers hash are case sensitive) |
return Date.monthNumbers[name.substring(0, 1).toUpperCase() + name.substring(1, 3).toLowerCase()]; |
} |
|
/** |
* Creates and returns a new Date instance with the exact same date value as the called instance. |
* Dates are copied and passed by reference, so if a copied date variable is modified later, the original |
* variable will also be changed. When the intention is to create a new variable that will not |
* modify the original instance, you should create a clone. |
* |
* Example of correctly cloning a date: |
* <pre><code> |
//wrong way: |
var orig = new Date('10/1/2006'); |
var copy = orig; |
copy.setDate(5); |
document.write(orig); //returns 'Thu Oct 05 2006'! |
|
//correct way: |
var orig = new Date('10/1/2006'); |
var copy = orig.clone(); |
copy.setDate(5); |
document.write(orig); //returns 'Thu Oct 01 2006' |
</code></pre> |
* @return {Date} The new Date instance. |
*/ |
Date.prototype.clone = function() { |
return new Date(this.getTime()); |
}; |
|
/** |
* Clears any time information from this date. |
@param {Boolean} clone true to create a clone of this date, clear the time and return it (defaults to false). |
@return {Date} this or the clone. |
*/ |
Date.prototype.clearTime = function(clone){ |
if(clone){ |
return this.clone().clearTime(); |
} |
this.setHours(0); |
this.setMinutes(0); |
this.setSeconds(0); |
this.setMilliseconds(0); |
return this; |
}; |
|
// private |
// safari setMonth is broken |
if(Ext.isSafari){ |
Date.brokenSetMonth = Date.prototype.setMonth; |
Date.prototype.setMonth = function(num){ |
if(num <= -1){ |
var n = Math.ceil(-num); |
var back_year = Math.ceil(n/12); |
var month = (n % 12) ? 12 - n % 12 : 0 ; |
this.setFullYear(this.getFullYear() - back_year); |
return Date.brokenSetMonth.call(this, month); |
} else { |
return Date.brokenSetMonth.apply(this, arguments); |
} |
}; |
} |
|
/** Date interval constant @static @type String */ |
Date.MILLI = "ms"; |
/** Date interval constant @static @type String */ |
Date.SECOND = "s"; |
/** Date interval constant @static @type String */ |
Date.MINUTE = "mi"; |
/** Date interval constant @static @type String */ |
Date.HOUR = "h"; |
/** Date interval constant @static @type String */ |
Date.DAY = "d"; |
/** Date interval constant @static @type String */ |
Date.MONTH = "mo"; |
/** Date interval constant @static @type String */ |
Date.YEAR = "y"; |
|
/** |
* Provides a convenient method of performing basic date arithmetic. This method |
* does not modify the Date instance being called - it creates and returns |
* a new Date instance containing the resulting date value. |
* |
* Examples: |
* <pre><code> |
//Basic usage: |
var dt = new Date('10/29/2006').add(Date.DAY, 5); |
document.write(dt); //returns 'Fri Oct 06 2006 00:00:00' |
|
//Negative values will subtract correctly: |
var dt2 = new Date('10/1/2006').add(Date.DAY, -5); |
document.write(dt2); //returns 'Tue Sep 26 2006 00:00:00' |
|
//You can even chain several calls together in one line! |
var dt3 = new Date('10/1/2006').add(Date.DAY, 5).add(Date.HOUR, 8).add(Date.MINUTE, -30); |
document.write(dt3); //returns 'Fri Oct 06 2006 07:30:00' |
</code></pre> |
* |
* @param {String} interval A valid date interval enum value. |
* @param {Number} value The amount to add to the current date. |
* @return {Date} The new Date instance. |
*/ |
Date.prototype.add = function(interval, value){ |
var d = this.clone(); |
if (!interval || value === 0) return d; |
switch(interval.toLowerCase()){ |
case Date.MILLI: |
d.setMilliseconds(this.getMilliseconds() + value); |
break; |
case Date.SECOND: |
d.setSeconds(this.getSeconds() + value); |
break; |
case Date.MINUTE: |
d.setMinutes(this.getMinutes() + value); |
break; |
case Date.HOUR: |
d.setHours(this.getHours() + value); |
break; |
case Date.DAY: |
d.setDate(this.getDate() + value); |
break; |
case Date.MONTH: |
var day = this.getDate(); |
if(day > 28){ |
day = Math.min(day, this.getFirstDateOfMonth().add('mo', value).getLastDateOfMonth().getDate()); |
} |
d.setDate(day); |
d.setMonth(this.getMonth() + value); |
break; |
case Date.YEAR: |
d.setFullYear(this.getFullYear() + value); |
break; |
} |
return d; |
}; |
|
/** |
* Checks if this date falls on or between the given start and end dates. |
* @param {Date} start Start date |
* @param {Date} end End date |
* @return {Boolean} true if this date falls on or between the given start and end dates. |
*/ |
Date.prototype.between = function(start, end){ |
var t = this.getTime(); |
return start.getTime() <= t && t <= end.getTime(); |
} |