Ext.Date
Files
A set of useful static methods to deal with date Note that if Ext.Date is required and loaded, it will copy all methods / properties to this object for convenience
The date parsing and formatting syntax contains a subset of
PHP's date() function, and the formats that are
supported will provide results equivalent to their PHP versions.
The following is a list of all currently supported formats:
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 Decimal fraction of a second Examples:
(minimum 1 digit, arbitrary number of digits allowed) 001 (i.e. 0.001s) or
100 (i.e. 0.100s) or
999 (i.e. 0.999s) or
999876543210 (i.e. 0.999876543210s)
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
Notes: Examples:
1) If unspecified, the month / day defaults to the current month / day, 1991 or
the time defaults to midnight, while the timezone defaults to the 1992-10 or
browser's timezone. If a time is specified, it must include both hours 1993-09-20 or
and minutes. The "T" delimiter, seconds, milliseconds and timezone 1994-08-19T16:20+01:00 or
are optional. 1995-07-18T17:21:28-02:00 or
2) The decimal fraction of a second, if specified, must contain at 1996-06-17T18:22:29.98765+03:00 or
least 1 digit (there is no limit to the maximum number 1997-05-16T19:23:30,12345-0400 or
of digits allowed), and may be delimited by either a '.' or a ',' 1998-04-15T20:24:31.2468Z or
Refer to the examples on the right for the various levels of 1999-03-14T20:24:32Z or
date-time granularity which are supported, or see 2000-02-13T21:25:33
http://www.w3.org/TR/NOTE-datetime for more info. 2001-01-12 22:26:34
U Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) 1193432466 or -2138434463
MS Microsoft AJAX serialized dates \/Date(1238606590509)\/ (i.e. UTC milliseconds since epoch) or
\/Date(1238606590509+0800)\/
time A javascript millisecond timestamp 1350024476440
timestamp A UNIX timestamp (same as U) 1350024866
Example usage (note that you must escape format specifiers with '\' to render them as character literals):
// 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');
console.log(Ext.Date.format(dt, 'Y-m-d')); // 2007-01-10
console.log(Ext.Date.format(dt, 'F j, Y, g:i a')); // January 10, 2007, 3:05 pm
console.log(Ext.Date.format(dt, 'l, \t\he jS \of F Y h:i:s A')); // Wednesday, the 10th of January 2007 03:05:01 PM
Here are some standard date/time patterns that you might find helpful. They are not part of the source of Ext.Date, but to use them you can simply copy this block of code into any script that is included after Ext.Date and they will also become globally available on the Date object. Feel free to add or remove patterns as needed in your code.
Ext.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"
};
Example usage:
var dt = new Date();
console.log(Ext.Date.format(dt, Ext.Date.patterns.ShortDate));
Developer-written, custom formats may be used by supplying both a formatting and a parsing function which perform to specialized requirements. The functions are stored in parseFunctions and formatFunctions.
Available since: 4.0.0
Properties
An array of textual day names. Override these values for international dates.
Example:
Ext.Date.dayNames = [
'SundayInYourLang',
'MondayInYourLang'
// ...
];
Defaults to: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]
Available since: 4.0.4
The date format string that the Ext.util.Format.dateRenderer and Ext.util.Format.date functions use. See Ext.Date for details.
This may be overridden in a locale file.
Defaults to: "m/d/Y"
Available since: 4.0.4
An object hash containing default date values used during date parsing.
The following properties are available:
y: NumberThe default year value. (defaults to undefined)m: NumberThe default 1-based month value. (defaults to undefined)d: NumberThe default day value. (defaults to undefined)h: NumberThe default hour value. (defaults to undefined)i: NumberThe default minute value. (defaults to undefined)s: NumberThe default second value. (defaults to undefined)ms: NumberThe default millisecond value. (defaults to undefined)
Override these properties to customize the default date values used by the parse method.
Note: In countries which experience Daylight Saving Time (i.e. DST), the h, i, s
and ms properties may coincide with the exact time in which DST takes effect.
It is the responsibility of the developer to account for this.
Example Usage:
// set default day value to the first day of the month
Ext.Date.defaults.d = 1;
// parse a February date string containing only year and month values.
// setting the default day value to 1 prevents weird date rollover issues
// when attempting to parse the following date string on, for example, March 31st 2009.
Ext.Date.parse('2009-02', 'Y-m'); // returns a Date object representing February 1st 2009
Defaults to: {}
Available since: 4.0.4
The base format-code to formatting-function hashmap used by the format method. Formatting functions are strings (or functions which return strings) which will return the appropriate value when evaluated in the context of the Date object from which the format method is called. Add to / override these mappings for custom date formatting.
Note: Ext.Date.format() treats characters as literals if an appropriate mapping cannot be found.
Example:
Ext.Date.formatCodes.x = "Ext.util.Format.leftPad(this.getDate(), 2, '0')";
console.log(Ext.Date.format(new Date(), 'X'); // returns the current day of the month
Available since: 4.0.4
An object hash in which each property is a date formatting function. The property name is the format string which corresponds to the produced formatted date string.
This object is automatically populated with date formatting functions as date formats are requested for Ext standard formatting strings.
Custom formatting functions may be inserted into this object, keyed by a name which from then on may be used as a format string to format.
Example:
Ext.Date.formatFunctions['x-date-format'] = myDateFormatter;
A formatting function should return a string representation of the passed Date object, and is passed the following parameters:
date: DateThe Date to format.
To enable date strings to also be parsed according to that format, a corresponding parsing function must be placed into the parseFunctions property.
Available since: 4.0.4
An array of textual month names. Override these values for international dates.
Example:
Ext.Date.monthNames = [
'JanInYourLang',
'FebInYourLang'
// ...
];
Defaults to: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
Available since: 4.0.4
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.
Example:
Ext.Date.monthNumbers = {
'LongJanNameInYourLang': 0,
'ShortJanNameInYourLang':0,
'LongFebNameInYourLang':1,
'ShortFebNameInYourLang':1
// ...
};
Defaults to: {January: 0, Jan: 0, February: 1, Feb: 1, March: 2, Mar: 2, April: 3, Apr: 3, May: 4, June: 5, Jun: 5, July: 6, Jul: 6, August: 7, Aug: 7, September: 8, Sep: 8, October: 9, Oct: 9, November: 10, Nov: 10, December: 11, Dec: 11}
Available since: 4.0.4
An object hash in which each property is a date parsing function. The property name is the format string which that function parses.
This object is automatically populated with date parsing functions as date formats are requested for Ext standard formatting strings.
Custom parsing functions may be inserted into this object, keyed by a name which from then on may be used as a format string to parse.
Example:
Ext.Date.parseFunctions['x-date-format'] = myDateParser;
A parsing function should return a Date object, and is passed the following parameters:
date: StringThe date string to parse.strict: BooleanTrue to validate date strings while parsing (i.e. prevent JavaScript Date "rollover") (The default must befalse). Invalid date strings should returnnullwhen parsed.
To enable Dates to also be formatted according to that format, a corresponding formatting function must be placed into the formatFunctions property.
Available since: 4.0.4
Global flag which determines if strict date parsing should be used. Strict date parsing will not roll-over invalid dates, which is the default behavior of JavaScript Date objects. (see parse for more information)
Defaults to: false
Available since: 4.0.4
Methods
Provides a convenient method for 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:
// Basic usage:
var dt = Ext.Date.add(new Date('10/29/2006'), Ext.Date.DAY, 5);
console.log(dt); // returns 'Fri Nov 03 2006 00:00:00'
// Negative values will be subtracted:
var dt2 = Ext.Date.add(new Date('10/1/2006'), Ext.Date.DAY, -5);
console.log(dt2); // returns 'Tue Sep 26 2006 00:00:00'
// Decimal values can be used:
var dt3 = Ext.Date.add(new Date('10/1/2006'), Ext.Date.DAY, 1.25);
console.log(dt3); // returns 'Mon Oct 02 2006 06:00:00'
Available since: 4.0.0
Parameters
- date : Date
The date to modify
- interval : String
A valid date interval enum value.
- value : Number
The amount to add to the current date.
Returns
- Date
The new Date instance.
Attempts to clear all time information from this Date by setting the time to midnight of the same day, automatically adjusting for Daylight Saving Time (DST) where applicable.
Note: DST timezone information for the browser's host operating system is assumed to be up-to-date.
Available since: 4.0.0
Parameters
- date : Date
The date
- clone : Boolean (optional)
trueto create a clone of this date, clear the time and return it.Defaults to:
false
Returns
- Date
this or the clone.
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:
//wrong way:
var orig = new Date('10/1/2006');
var copy = orig;
copy.setDate(5);
console.log(orig); // returns 'Thu Oct 05 2006'!
//correct way:
var orig = new Date('10/1/2006'),
copy = Ext.Date.clone(orig);
copy.setDate(5);
console.log(orig); // returns 'Thu Oct 01 2006'
Available since: 4.0.0
Parameters
- date : Date
The date.
Returns
- Date
The new Date instance.
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 monthNames array to retrieve the textual day name.
Example:
var dt = new Date('1/10/2007'),
firstDay = Ext.Date.getFirstDayOfMonth(dt);
console.log(Ext.Date.dayNames[firstDay]); // output: 'Monday'
Available since: 4.0.0
Parameters
- date : Date
The date
Returns
- Number
The day number (0-6).
Get the offset from GMT of the current date (equivalent to the format specifier 'O').
Available since: 4.0.0
Parameters
- date : Date
The date
- colon : Boolean (optional)
true to separate the hours and minutes with a colon.
Defaults to:
false
Returns
- String
The 4-character offset string prefixed with + or - (e.g. '-0600').
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 monthNames array to retrieve the textual day name.
Example:
var dt = new Date('1/10/2007'),
lastDay = Ext.Date.getLastDayOfMonth(dt);
console.log(Ext.Date.dayNames[lastDay]); // output: 'Wednesday'
Available since: 4.0.0
Parameters
- date : Date
The date
Returns
- Number
The day number (0-6).
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.
Available since: 4.0.0
Parameters
- date : Date
The date
Returns
- String
The abbreviated timezone name (e.g. 'CST', 'PDT', 'EDT', 'MPST' ...).
Checks if the passed Date parameters will cause a JavaScript Date "rollover".
Available since: 4.0.4
Parameters
- year : Number
4-digit year
- month : Number
1-based month-of-year
- day : Number
Day of month
- hour : Number (optional)
Hour
- minute : Number (optional)
Minute
- second : Number (optional)
Second
- millisecond : Number (optional)
Millisecond
Returns
- Boolean
trueif the passed parameters do not cause a Date "rollover",falseotherwise.
Parses the passed string using the specified date format. Note that this function expects normal calendar dates, meaning that months are 1-based (i.e. 1 = January). The defaults hash will be used for any date value (i.e. year, month, day, hour, minute, second or millisecond) which cannot be found in the passed string. If a corresponding default date value has not been specified in the defaults hash, the current date's year, month, day or DST-adjusted zero-hour time value will be used instead. Keep in mind that the input date string must precisely match the specified format string in order for the parse operation to be successful (failed parse operations return a null value).
Example:
//dt = Fri May 25 2007 (current date)
var dt = new Date();
//dt = Thu May 25 2006 (today's month/day in 2006)
dt = Ext.Date.parse("2006", "Y");
//dt = Sun Jan 15 2006 (all date parts specified)
dt = Ext.Date.parse("2006-01-15", "Y-m-d");
//dt = Sun Jan 15 2006 15:20:01
dt = Ext.Date.parse("2006-01-15 3:20:01 PM", "Y-m-d g:i:s A");
// attempt to parse Sun Feb 29 2006 03:20:01 in strict mode
dt = Ext.Date.parse("2006-02-29 03:20:01", "Y-m-d H:i:s", true); // returns null
Available since: 4.0.4
Parameters
- input : String
The raw date string.
- format : String
The expected date string format.
- strict : Boolean (optional)
trueto validate date strings while parsing (i.e. prevents JavaScript Date "rollover"). Invalid date strings will returnnullwhen parsed.Defaults to:
false
Returns
- Date
The parsed Date.