| 1 |
/* |
| 2 |
* Date prototype extensions. Doesn't depend on any |
| 3 |
* other code. Doens't overwrite existing methods. |
| 4 |
* |
| 5 |
* Adds dayNames, abbrDayNames, monthNames and abbrMonthNames static properties and isLeapYear, |
| 6 |
* isWeekend, isWeekDay, getDaysInMonth, getDayName, getMonthName, getDayOfYear, getWeekOfYear, |
| 7 |
* setDayOfYear, addYears, addMonths, addDays, addHours, addMinutes, addSeconds methods |
| 8 |
* |
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* Copyright (c) 2006 Jörn Zaefferer and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net) |
| 10 |
* |
| 11 |
* Additional methods and properties added by Kelvin Luck: firstDayOfWeek, dateFormat, zeroTime, asString, fromString - |
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* I've added my name to these methods so you know who to blame if they are broken! |
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* |
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* Dual licensed under the MIT and GPL licenses: |
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* http://www.opensource.org/licenses/mit-license.php |
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* http://www.gnu.org/licenses/gpl.html |
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* |
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*/ |
| 19 |
|
| 20 |
/** |
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* An Array of day names starting with Sunday. |
| 22 |
* |
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* @example dayNames[0] |
| 24 |
* @result 'Sunday' |
| 25 |
* |
| 26 |
* @name dayNames |
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* @type Array |
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* @cat Plugins/Methods/Date |
| 29 |
*/ |
| 30 |
Date.dayNames = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']; |
| 31 |
|
| 32 |
/** |
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* An Array of abbreviated day names starting with Sun. |
| 34 |
* |
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* @example abbrDayNames[0] |
| 36 |
* @result 'Sun' |
| 37 |
* |
| 38 |
* @name abbrDayNames |
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* @type Array |
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* @cat Plugins/Methods/Date |
| 41 |
*/ |
| 42 |
Date.abbrDayNames = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']; |
| 43 |
|
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/** |
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* An Array of month names starting with Janurary. |
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* |
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* @example monthNames[0] |
| 48 |
* @result 'January' |
| 49 |
* |
| 50 |
* @name monthNames |
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* @type Array |
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* @cat Plugins/Methods/Date |
| 53 |
*/ |
| 54 |
Date.monthNames = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']; |
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|
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/** |
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* An Array of abbreviated month names starting with Jan. |
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* |
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* @example abbrMonthNames[0] |
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* @result 'Jan' |
| 61 |
* |
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* @name monthNames |
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* @type Array |
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* @cat Plugins/Methods/Date |
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*/ |
| 66 |
Date.abbrMonthNames = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']; |
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|
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/** |
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* The first day of the week for this locale. |
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* |
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* @name firstDayOfWeek |
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* @type Number |
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* @cat Plugins/Methods/Date |
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* @author Kelvin Luck |
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*/ |
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Date.firstDayOfWeek = 1; |
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|
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/** |
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* The format that string dates should be represented as (e.g. 'dd/mm/yyyy' for UK, 'mm/dd/yyyy' for US, 'yyyy-mm-dd' for Unicode etc). |
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* |
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* @name format |
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* @type String |
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* @cat Plugins/Methods/Date |
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* @author Kelvin Luck |
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*/ |
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Date.format = 'dd/mm/yyyy'; |
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//Date.format = 'mm/dd/yyyy'; |
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//Date.format = 'yyyy-mm-dd'; |
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//Date.format = 'dd mmm yy'; |
| 90 |
|
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/** |
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* The first two numbers in the century to be used when decoding a two digit year. Since a two digit year is ambiguous (and date.setYear |
| 93 |
* only works with numbers < 99 and so doesn't allow you to set years after 2000) we need to use this to disambiguate the two digit year codes. |
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* |
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* @name format |
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* @type String |
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* @cat Plugins/Methods/Date |
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* @author Kelvin Luck |
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*/ |
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Date.fullYearStart = '20'; |
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|
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(function() { |
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|
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/** |
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* Adds a given method under the given name |
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* to the Date prototype if it doesn't |
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* currently exist. |
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* |
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* @private |
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*/ |
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function add(name, method) { |
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if( !Date.prototype[name] ) { |
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Date.prototype[name] = method; |
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} |
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} |
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|
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/** |
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* Checks if the year is a leap year. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.isLeapYear(); |
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* @result true |
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* |
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* @name isLeapYear |
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* @type Boolean |
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* @cat Plugins/Methods/Date |
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*/ |
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add("isLeapYear", function() { |
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var y = this.getFullYear(); |
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return (y%4==0 && y%100!=0) || y%400==0; |
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}); |
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|
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/** |
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* Checks if the day is a weekend day (Sat or Sun). |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.isWeekend(); |
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* @result false |
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* |
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* @name isWeekend |
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* @type Boolean |
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* @cat Plugins/Methods/Date |
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*/ |
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add("isWeekend", function() { |
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return this.getDay()==0 || this.getDay()==6; |
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}); |
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|
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/** |
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* Check if the day is a day of the week (Mon-Fri) |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.isWeekDay(); |
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* @result false |
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* |
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* @name isWeekDay |
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* @type Boolean |
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* @cat Plugins/Methods/Date |
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*/ |
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add("isWeekDay", function() { |
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return !this.isWeekend(); |
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}); |
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|
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/** |
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* Gets the number of days in the month. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.getDaysInMonth(); |
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* @result 31 |
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* |
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* @name getDaysInMonth |
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* @type Number |
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* @cat Plugins/Methods/Date |
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*/ |
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add("getDaysInMonth", function() { |
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return [31,(this.isLeapYear() ? 29:28),31,30,31,30,31,31,30,31,30,31][this.getMonth()]; |
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}); |
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|
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/** |
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* Gets the name of the day. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.getDayName(); |
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* @result 'Saturday' |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.getDayName(true); |
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* @result 'Sat' |
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* |
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* @param abbreviated Boolean When set to true the name will be abbreviated. |
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* @name getDayName |
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* @type String |
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* @cat Plugins/Methods/Date |
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*/ |
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add("getDayName", function(abbreviated) { |
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return abbreviated ? Date.abbrDayNames[this.getDay()] : Date.dayNames[this.getDay()]; |
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}); |
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|
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/** |
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* Gets the name of the month. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.getMonthName(); |
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* @result 'Janurary' |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.getMonthName(true); |
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* @result 'Jan' |
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* |
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* @param abbreviated Boolean When set to true the name will be abbreviated. |
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* @name getDayName |
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* @type String |
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* @cat Plugins/Methods/Date |
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*/ |
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add("getMonthName", function(abbreviated) { |
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return abbreviated ? Date.abbrMonthNames[this.getMonth()] : Date.monthNames[this.getMonth()]; |
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}); |
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|
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/** |
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* Get the number of the day of the year. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.getDayOfYear(); |
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* @result 11 |
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* |
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* @name getDayOfYear |
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* @type Number |
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* @cat Plugins/Methods/Date |
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*/ |
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add("getDayOfYear", function() { |
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var tmpdtm = new Date("1/1/" + this.getFullYear()); |
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return Math.floor((this.getTime() - tmpdtm.getTime()) / 86400000); |
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}); |
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|
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/** |
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* Get the number of the week of the year. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.getWeekOfYear(); |
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* @result 2 |
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* |
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* @name getWeekOfYear |
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* @type Number |
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* @cat Plugins/Methods/Date |
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*/ |
| 245 |
add("getWeekOfYear", function() { |
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return Math.ceil(this.getDayOfYear() / 7); |
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}); |
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|
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/** |
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* Set the day of the year. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.setDayOfYear(1); |
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* dtm.toString(); |
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* @result 'Tue Jan 01 2008 00:00:00' |
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* |
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* @name setDayOfYear |
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* @type Date |
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* @cat Plugins/Methods/Date |
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*/ |
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add("setDayOfYear", function(day) { |
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this.setMonth(0); |
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this.setDate(day); |
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return this; |
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}); |
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|
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/** |
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* Add a number of years to the date object. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.addYears(1); |
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* dtm.toString(); |
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* @result 'Mon Jan 12 2009 00:00:00' |
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* |
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* @name addYears |
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* @type Date |
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* @cat Plugins/Methods/Date |
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*/ |
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add("addYears", function(num) { |
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this.setFullYear(this.getFullYear() + num); |
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return this; |
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}); |
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|
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/** |
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* Add a number of months to the date object. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.addMonths(1); |
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* dtm.toString(); |
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* @result 'Tue Feb 12 2008 00:00:00' |
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* |
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* @name addMonths |
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* @type Date |
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* @cat Plugins/Methods/Date |
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*/ |
| 296 |
add("addMonths", function(num) { |
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var tmpdtm = this.getDate(); |
| 298 |
|
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this.setMonth(this.getMonth() + num); |
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|
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if (tmpdtm > this.getDate()) |
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this.addDays(-this.getDate()); |
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|
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return this; |
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}); |
| 306 |
|
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/** |
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* Add a number of days to the date object. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
| 311 |
* dtm.addDays(1); |
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* dtm.toString(); |
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* @result 'Sun Jan 13 2008 00:00:00' |
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* |
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* @name addDays |
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* @type Date |
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* @cat Plugins/Methods/Date |
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*/ |
| 319 |
add("addDays", function(num) { |
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//this.setDate(this.getDate() + num); |
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this.setTime(this.getTime() + (num*86400000) ); |
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return this; |
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}); |
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|
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/** |
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* Add a number of hours to the date object. |
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* |
| 328 |
* @example var dtm = new Date("01/12/2008"); |
| 329 |
* dtm.addHours(24); |
| 330 |
* dtm.toString(); |
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* @result 'Sun Jan 13 2008 00:00:00' |
| 332 |
* |
| 333 |
* @name addHours |
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* @type Date |
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* @cat Plugins/Methods/Date |
| 336 |
*/ |
| 337 |
add("addHours", function(num) { |
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this.setHours(this.getHours() + num); |
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return this; |
| 340 |
}); |
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|
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/** |
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* Add a number of minutes to the date object. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
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* dtm.addMinutes(60); |
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* dtm.toString(); |
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* @result 'Sat Jan 12 2008 01:00:00' |
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* |
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* @name addMinutes |
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* @type Date |
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* @cat Plugins/Methods/Date |
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*/ |
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add("addMinutes", function(num) { |
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this.setMinutes(this.getMinutes() + num); |
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return this; |
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}); |
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|
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/** |
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* Add a number of seconds to the date object. |
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* |
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* @example var dtm = new Date("01/12/2008"); |
| 363 |
* dtm.addSeconds(60); |
| 364 |
* dtm.toString(); |
| 365 |
* @result 'Sat Jan 12 2008 00:01:00' |
| 366 |
* |
| 367 |
* @name addSeconds |
| 368 |
* @type Date |
| 369 |
* @cat Plugins/Methods/Date |
| 370 |
*/ |
| 371 |
add("addSeconds", function(num) { |
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this.setSeconds(this.getSeconds() + num); |
| 373 |
return this; |
| 374 |
}); |
| 375 |
|
| 376 |
/** |
| 377 |
* Sets the time component of this Date to zero for cleaner, easier comparison of dates where time is not relevant. |
| 378 |
* |
| 379 |
* @example var dtm = new Date(); |
| 380 |
* dtm.zeroTime(); |
| 381 |
* dtm.toString(); |
| 382 |
* @result 'Sat Jan 12 2008 00:01:00' |
| 383 |
* |
| 384 |
* @name zeroTime |
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* @type Date |
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* @cat Plugins/Methods/Date |
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* @author Kelvin Luck |
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*/ |
| 389 |
add("zeroTime", function() { |
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this.setMilliseconds(0); |
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this.setSeconds(0); |
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this.setMinutes(0); |
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this.setHours(0); |
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return this; |
| 395 |
}); |
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|
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/** |
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* Returns a string representation of the date object according to Date.format. |
| 399 |
* (Date.toString may be used in other places so I purposefully didn't overwrite it) |
| 400 |
* |
| 401 |
* @example var dtm = new Date("01/12/2008"); |
| 402 |
* dtm.asString(); |
| 403 |
* @result '12/01/2008' // (where Date.format == 'dd/mm/yyyy' |
| 404 |
* |
| 405 |
* @name asString |
| 406 |
* @type Date |
| 407 |
* @cat Plugins/Methods/Date |
| 408 |
* @author Kelvin Luck |
| 409 |
*/ |
| 410 |
add("asString", function(format) { |
| 411 |
var r = format || Date.format; |
| 412 |
return r |
| 413 |
.split('yyyy').join(this.getFullYear()) |
| 414 |
.split('yy').join((this.getFullYear() + '').substring(2)) |
| 415 |
.split('mmmm').join(this.getMonthName(false)) |
| 416 |
.split('mmm').join(this.getMonthName(true)) |
| 417 |
.split('mm').join(_zeroPad(this.getMonth()+1)) |
| 418 |
.split('dd').join(_zeroPad(this.getDate())) |
| 419 |
.split('hh').join(_zeroPad(this.getHours())) |
| 420 |
.split('min').join(_zeroPad(this.getMinutes())) |
| 421 |
.split('ss').join(_zeroPad(this.getSeconds())); |
| 422 |
}); |
| 423 |
|
| 424 |
/** |
| 425 |
* Returns a new date object created from the passed String according to Date.format or false if the attempt to do this results in an invalid date object |
| 426 |
* (We can't simple use Date.parse as it's not aware of locale and I chose not to overwrite it incase it's functionality is being relied on elsewhere) |
| 427 |
* |
| 428 |
* @example var dtm = Date.fromString("12/01/2008"); |
| 429 |
* dtm.toString(); |
| 430 |
* @result 'Sat Jan 12 2008 00:00:00' // (where Date.format == 'dd/mm/yyyy' |
| 431 |
* |
| 432 |
* @name fromString |
| 433 |
* @type Date |
| 434 |
* @cat Plugins/Methods/Date |
| 435 |
* @author Kelvin Luck |
| 436 |
*/ |
| 437 |
Date.fromString = function(s, format) |
| 438 |
{ |
| 439 |
var f = format || Date.format; |
| 440 |
var d = new Date('01/01/1977'); |
| 441 |
|
| 442 |
var mLength = 0; |
| 443 |
|
| 444 |
var iM = f.indexOf('mmmm'); |
| 445 |
if (iM > -1) { |
| 446 |
for (var i=0; i<Date.monthNames.length; i++) { |
| 447 |
var mStr = s.substr(iM, Date.monthNames[i].length); |
| 448 |
if (Date.monthNames[i] == mStr) { |
| 449 |
mLength = Date.monthNames[i].length - 4; |
| 450 |
break; |
| 451 |
} |
| 452 |
} |
| 453 |
d.setMonth(i); |
| 454 |
} else { |
| 455 |
iM = f.indexOf('mmm'); |
| 456 |
if (iM > -1) { |
| 457 |
var mStr = s.substr(iM, 3); |
| 458 |
for (var i=0; i<Date.abbrMonthNames.length; i++) { |
| 459 |
if (Date.abbrMonthNames[i] == mStr) break; |
| 460 |
} |
| 461 |
d.setMonth(i); |
| 462 |
} else { |
| 463 |
d.setMonth(Number(s.substr(f.indexOf('mm'), 2)) - 1); |
| 464 |
} |
| 465 |
} |
| 466 |
|
| 467 |
var iY = f.indexOf('yyyy'); |
| 468 |
|
| 469 |
if (iY > -1) { |
| 470 |
if (iM < iY) |
| 471 |
{ |
| 472 |
iY += mLength; |
| 473 |
} |
| 474 |
d.setFullYear(Number(s.substr(iY, 4))); |
| 475 |
} else { |
| 476 |
if (iM < iY) |
| 477 |
{ |
| 478 |
iY += mLength; |
| 479 |
} |
| 480 |
|
| 481 |
d.setFullYear(Number(Date.fullYearStart + s.substr(f.indexOf('yy'), 2))); |
| 482 |
} |
| 483 |
var iD = f.indexOf('dd'); |
| 484 |
if (iM < iD) |
| 485 |
{ |
| 486 |
iD += mLength; |
| 487 |
} |
| 488 |
d.setDate(Number(s.substr(iD, 2))); |
| 489 |
if (isNaN(d.getTime())) { |
| 490 |
return false; |
| 491 |
} |
| 492 |
return d; |
| 493 |
}; |
| 494 |
|
| 495 |
// utility method |
| 496 |
var _zeroPad = function(num) { |
| 497 |
var s = '0'+num; |
| 498 |
return s.substring(s.length-2) |
| 499 |
//return ('0'+num).substring(-2); // doesn't work on IE :( |
| 500 |
}; |
| 501 |
|
| 502 |
})(); |
| 503 |
|