react-date-object

React Date Object

supported calendars: gregorian , persian , arabic , indian default: gregorian

supported locals: en , fa , ar , hi default: en

NodeJs: date-object

1- Install

npm:

npm install react-date-object --save

yarn:

yarn add react-date-object

2- Usage

var DateObject = require("react-date-object");

var dateObject = new DateObject();

3- static properties

3-1- calendars

returns supported calendars

{
  GREGORIAN: 'GREGORIAN',
  PERSIAN: 'PERSIAN',
  ARABIC: 'ARABIC',
  INDIAN: 'INDIAN'
}

3-2- locals

returns supported locals

{
  EN: 'EN',
  FA: 'FA', //farsi - persian
  AR: 'AR', //arabic
  HI: 'HI'  //hindi - indian
}

4- Examples

4-1- new instance

4-1-1- String (year month day hour minute second millisecond meridiem)

var date = new DateObject("2020 8 21 11 55 36 100 am");

date.format("YYYY/MM/DD hh:mm:ss.SSS a"); //2020/08/21 11:55:36.100 am

date = new DateObject("2020/08/01");

date.format("YYYY/MM/DD hh:mm:ss.SSS a"); //2020/08/01 12:00:00.000 am

4-1-2- Number (unix time in milliseconds)

var date = new DateObject(1597994736000);

date.format("dddd DD MMMM @ hh:mm:ss.SSS a"); //Friday 21 August @ 11:55:36.000 am

4-1-3- JavaScript Date

var $date = new Date(2019, 8, 20);

var date = new DateObject($date);

date.format(); //2019/09/20

4-1-4- DateObject

var $date = new DateObject("2019/09/20");

var date = new DateObject($date);

date.format(); //2019/09/20

4-1-5- Object

4-1-5-1-

{
  date: String , Number(unix time in milliseconds), JavaScript Date or DateObject, //default new Date()
  calendar: `gregorian`, `persian` or `arabic`, //default `gregorian`
  local: `en`, `fa` or `ar`, //default `en`
  format: `String` //default `YYYY/MM/DD`
}

var date = new DateObject({
  date: new Date(),
  calendar: "gregorian",
  local: "en",
});

date.format(); //2020/08/21

date = new DateObject({
  date: new Date(),
  calendar: "persian",
  local: "fa",
});

date.format(); //۱۳۹۹/۰۵/۳۱

date = new DateObject({
  date: "31 Mordad 1399",
  calendar: "persian",
  local: "en",
  format: "DD MMMM YYYY",
});

date.format(); //31 Mordad 1399

4-1-5-2-

{
  year: Number,
  month: Number,
  day: Number,
  hour: Number, //default 0
  minute: Number, //default 0
  second: Number, //default 0
  millisecond: Number, //default 0
  calendar: `gregorian`, `persian` or `arabic`, //default `gregorian`
  local: `en`, `fa` or `ar`, //default `en`
  format: String //default `YYYY/MM/DD`
}

var date = new DateObject({
  year: 2020,
  month: 8,
  day: 21,
  hour: 12,
  minute: 20,
  second: 36,
  milisecond: 152,
  format: "dddd DD MMMM YYYY",
});

date.format(); //Friday 21 August 2020

date = new DateObject({
  year: 1399,
  month: 5,
  day: 31,
  calendar: "persian",
  local: "en",
  format: "dddd DD MMMM YYYY",
});

date.format(); //Jomeh 31 Mordad 1399

date = new DateObject({
  year: 1399,
  month: 5,
  day: 31,
  calendar: "persian",
  local: "fa",
  format: "dddd DD MMMM YYYY",
});

date.format(); //جمعه ۳۱ مرداد ۱۳۹۹

4-2- convert(calendar:String)

if you use the convert method without argument, the date will be converted to Gregorian calendar.

var date = new DateObject(); //2020/10/31

date.convert(DateObject.calendars.PERSIAN); //1399/08/10 or date.convert("persian")
date.convert(DateObject.calendars.ARABIC); //1442/03/14 or date.convert("arabic")
date.convert(DateObject.calendars.INDIAN); //1942/08/09 or date.convert("indian")
date.convert(DateObject.calendars.GREGORIAN); //2020/10/31 or date.convert()

4-3- format(token:String)

default format is YYYY/MM/DD to see all format types click here

var date = new DateObject();

date.format(); //2020/10/31
date.format("MM/DD/YYYY"); //10/31/2020
date.format("MMM/DD/YYYY HH:mm:ss"); //Oct/31/2020 18:17:28
date.format("dddd DD MMMM YYYY, hh:mm:ss A"); //Saturday 31 October 2020, 06:19:18 PM
date.format("ddd DD MMM YYYY, hh:mm a"); //Sat 31 Oct 2020, 06:20 pm

4-4- setter methods

var date = new DateObject();

date
  .setCalendar("gregorian")
  .setFormat("YYYY-MM-DD HH:mm:ss.SSS")
  .setLocal("en")
  .setYear(2020)
  .setMonth(8)
  .setDay(21)
  .setHour(12)
  .setMinute(20)
  .setSecond(14)
  .setMillisecond(200);

date.format(); //2020-09-21 12:20:14.200

date
  .setCalendar("persian")
  .setYear(1399)
  .setMonth(8)
  .setDay(21)
  .setFormat("dddd DD MMMM YYYY");

date.format(); //Jomeh 21 Azar 1399

date.setDate(new Date(2020, 9, 27)).format(); //Tuesday 27 October 2020 (calendar is set to gregorian)

date
  .setDate(new DateObject({ calendar: "indian", year: 1942, month: 8, day: 5 })) //format is set based on given DateObject (default:YYYY/MM/DD)
  .format(); //1942/08/05

4-5- get and set

var date = new DateObject();

date.format(); //2020/08/21

date.year += 2;
date.month += 2;
date.day += 2;
date.hour += 2;
date.minute += 2;
date.second += 2;
date.millisecond += 2;

date.format(); //2022/10/23

console.log(date.month);

/**
 *  {
 *    name: 'October',
 *    shortName: 'Oct',
 *    length: 31,
 *    index: 9,
 *    number: 10,
 *    toString: [Function (anonymous)]
 *  }
 */

console.log(date.weekDay);

/**
 * {
 *   name: 'Sunday',
 *   shortName: 'Sun',
 *   index: 0,
 *   number: 1,
 *   toString: [Function (anonymous)]
 * }
 */

console.log(`${date.weekDay.name} ${date.year}/${date.month}/${date.day}`); //Sunday 2022/10/23

date.year = 2020;
date.month = 8;
date.day = 21;

date.isLeap; //true
date.isValid; //true
date.isUTC; //false
date.month.name; //August
date.month.length; //31
date.month.index; //7
date.month.number; //8

date.weekDay.name; //Friday
date.weekDay.index; //5
date.weekDay.number; //6

date.dayOfBeginning; //737658
date.dayOfYear; //234
date.daysLeft; //132
date.weekOfYear; //34
date.unix; //1597951800 (unix time in seconds)

date.weekDays; // array [{ name: 'Sunday', shortName: 'Sun', ...}]
date.months; //array [{ name: 'January', shortName: 'Jan', ...}]
date.leaps; //array [4,   8,  12,  16,  20,...]

4-6- parse(date:String)

Remember that parsing date is based on the format you set

var date = new DateObject();

date._format = "dddd DD MMMM YYYY";

date.parse("Monday 24 August 2020");
date.format("YYYY/MM/DD"); //2020/08/24

date.parse("Friday 07 August 2020");
date.format("YYYY-MM-DD"); //2020-08-07

date.setCalendar("persian").setFormat("YYYY/MM/DD").parse("1399/06/03");
date.format(); //1399/06/03

date.setFormat("YYYY/MM/DD HH:mm").parse("1399/06/03 12:32");
date.format("dddd DD MMMM @ hh:mm a"); //Doshanbeh 03 Shahrivar @ 12:32 am

4-7- getProperty

let date = new DateObject({
  calendar: "arabic",
  date: "1442/01/01",
  local: "ar",
});

date.getProperty("M"); //1
date.format("M"); //١

typeof date.getProperty("D"); //number
typeof date.format("D"); //string

Number(date.getProperty("YYYY")); //1442
Number(date.format("YYYY")); //NaN

4-8- add(duration:Number or String,type:String)

Types
years	year	y
months	month	M
days	day	d
hours	hour	h
minutes	minute	m
seconds	second	s
milliseconds	millisecond	ms

var date = new DateObject("2020/10/07 5:35:24 pm");

date.setFormat("YYYY/MM/DD hh:mm:ss.SSS");

date.add(2, "years").format(); //2022/10/07 05:35:24.000
date.add("1", "month").format(); //2022/11/07 05:35:24.000
date.add(3, "d").format(); //2022/11/10 05:35:24.000
date.add(-4, "hours").format(); //2022/11/10 01:35:24.000
date.add(1, "minute").format(); //2022/11/10 01:36:24.000
date.add("-20", "s").format(); //2022/11/10 01:36:04.000
date.add(100, "milliseconds").format(); //2022/11/10 01:36:04.100

4-9- set method

4-9-1 set(key:String,value:Any)

var date = new DateObject(); //2020/10/31

date.set("year", 2021); //2021/10/31
date.set("month", 1); //2021/01/31
date.set("day", 7); //2021/01/07
date.set("format", "MM/DD/YYYY"); //01/07/2021
date.set("calendar", "indian"); //10/17/1942
date.set("local", "hi"); //१०/१७/१९४२
date.set("date", new DateObject({ calendar: "persian", local: "en" })); //1399/08/10
date.set("date", new Date()); //2020/10/31 (calendar is set to gregorian)

4-9-2 set(object)

var date = new DateObject(); //2020/10/31

date.set({ calendar: "persian", format: "dddd DD MMMM YYYY" }); //Shanbeh 10 Aban 1399
date.set({ calendar: "gregorian", year: 2020, month: 11, day: 12 }); //Saturday 12 December 2020
date.set(new DateObject().toObject()); //2020/10/31

4-10- toUTC()

let date = new Date(); //Wed Oct 14 2020 11:12:18 GMT+0330

let dateObject = new DateObject({
  date,
  calendar: "arabic",
  format: "ddd, DD MMM YYYY HH:mm:ss",
}); //Arb, 26 Sa 1442 11:12:18

console.log(`
dateUTC      : ${date.toUTCString()}
arabicUTC    : ${dateObject.toUTC().toString()}
gregorianUTC : ${dateObject.convert().toString()}
`);

/**
 * dateUTC      : Wed, 14 Oct 2020 07:42:18 GMT
 * arabicUTC    : Arb, 26 Sa 1442 07:42:18
 * gregorianUTC : Wed, 14 Oct 2020 07:42:18
 */

4-11- custom months & week days

See the example below in case you want to use your personal names instead of default names of months and week days

var date = new DateObject();

date.format("MMMM MMM"); //November Nov
date.format("dddd ddd"); //Monday Mon

date.months = [
  ["jan", "j"], //[["name","shortName"], ... ]
  ["feb", "f"],
  ["mar", "m"],
  ["apr", "a"],
  ["may", "m"],
  ["jun", "j"],
  ["jul", "j"],
  ["aug", "a"],
  ["sep", "s"],
  ["oct", "o"],
  ["nov", "n"],
  ["dec", "d"],
];

date.weekDays = [
  ["su", "s"], //[["name","shortName"], ... ]
  ["mo", "m"],
  ["tu", "t"],
  ["we", "w"],
  ["th", "t"],
  ["fr", "f"],
  ["sa", "s"],
];

date.format("MMMM MMM"); //nov n
date.format("dddd ddd"); //mo m

console.log(date.month);

/**
 *{
 * length: 30,
 * name: 'nov',
 * shortName: 'n',
 * index: 10,
 * number: 11,
 * toString: [Function (anonymous)]
 *}
 */

console.log(date.weekDay);

/**
 *{
 * index: 1,
 * number: 2,
 * toString: [Function: toString],
 * name: 'mo',
 * shortName: 'm'
 *}
 */

You can use date.setMonths(months).setWeekDays(weekDays) as well

4-12- other methods

var date = new DateObject();

date.toFirstOfWeek(); //2020/08/16
date.toFirstOfMonth(); //2020/08/01
date.toFirstOfYear(); //2020/01/01
date.toFirstWeekOfYear(); //2020/01/05
date.toLastOfMonth(); //2020/01/31
date.toLastOfWeek(); //2020/02/01
date.toLastOfYear(); //2020/12/31
date.toLastWeekOfYear(); //2020/12/27

date.toString(); //2020/12/27
date.toDate(); //instanceof Date
date.toUnix(); //1609054714 (unix time in seconds)
date.toJulianDay(); //2459210
date.toObject();
/**
 *{
 *    year: 2020,
 *    month: {
 *        length: 31,
 *        name: 'December',
 *        shortName: 'Dec',
 *        index: 11,
 *        number: 12,
 *        toString: [Function (anonymous)]
 *    },
 *    day: 27,
 *    weekDay: {
 *        index: 0,
 *        number: 1,
 *        toString: [Function: toString],
 *        name: 'Sunday',
 *        shortName: 'Sun'
 *    },
 *    hour: 11,
 *    minute: 8,
 *    second: 34,
 *    millisecond: 724,
 *    weekOfYear: 52,
 *    dayOfYear: 362,
 *    daysLeft: 4,
 *    calendar: 'gregorian',
 *    local: 'en',
 *    format: 'YYYY/MM/DD'
 *}
 */

date.toJSON(); //same as toObject()

JSON.stringify(dateObject);
//{"year":2020,"month":{"length":31,"name":"December","shortName":"Dec","index":11,"number":12},"day":27,"weekDay":{"index":0,"number":1,"name":"Sunday","shortName":"Sun"},"hour":11,"minute":8,"second":34,"millisecond":724,"weekOfYear":52,"dayOfYear":362,"daysLeft":4,"calendar":"gregorian","local":"en","format":"YYYY/MM/DD"}

new DateObject(date.toJSON()).format(); //2020/12/27

4-13 valueOf()

returns unix time in milliseconds

var gregorian = new DateObject();
var persian = new DateObject({ date: gregorian, calendar: "persian" });
var arabic = new DateObject({ date: gregorian, calendar: "arabic" });
var indian = new DateObject({ date: gregorian, calendar: "indian" });

console.log(gregorian.valueOf(), gregorian.format()); //1604824018304 2020/11/08
console.log(persian.valueOf(), persian.format()); //1604824018304 1399/08/18
console.log(indian.valueOf(), indian.format()); //1604824018304 1942/08/17
console.log(arabic.valueOf(), arabic.format()); //1604824018304 1442/03/22

console.log(persian - gregorian === 0); //true

4-14- using calendars, format & locals

var date = new DateObject({ calendar: "gregorian", format: "dddd DD MMMM" });

date.format(); //Friday 21 August

date.calendar = "persian"; //Jomeh 31 Mordad
date.local = "fa"; //جمعه 31 مرداد
date._format = "YY/MM/DD"; //۹۹/۰۵/۳۱

date.setCalendar("gregorian").setLocal("en"); //20/08/21

date = new DateObject(new Date());

date.convert("persian").format(); //1399/05/31
date.convert("arabic").format(); //1442/01/02

5- format types

Type	Example	Description	Availability (Parse /Format)
YYYY	2020	full year	both
YY	20	2 digits year	both
MMMM	December	month name	both
MMM	Dec	month short name	both
MM	03, 09, 10, ...	2 digits month number	both
M	3, 9, 10, ...	month number	both
DDDD	09	day of year	format
DDD	9	day of year	format
DD	03, 09, 10, 17, ...	2 digits day of month	both
D	3, 9 ,10, 17	day of month	both
WW	01, 03, 24, 33, ...	week of year	format
W	1, 3, 24. 33, ...	week of year	format
dddd	Saturday, Sunday, Monday, ...	week day name	format
ddd	Sat, Sun, Mon, ...	week day short name	format
dd	01,02,...,07	2 digits week day number	format
d	1,2,...,7	week day number	format
HH	03, 09, 10, 17,...	2 digits hour (24 hour mode)	both
H	3, 9, 10, 17,...	hour (24 hour mode)	both
hh	03, 09, 10, 17,...	2 digits hour (12 hour mode)	both
h	3, 9, 10, 17,...	hour (12 hour mode)	both
mm	03, 09, 10, 17,...	2 digits minute	both
m	3, 9, 10, 17,...	minute	both
ss	03, 09, 10, 17,...	2 digits second	both
s	3, 9, 10, 17,...	second	both
SSS	100	3 digits millisecond	both
SS	10	2 digits millisecond	both
S	1	1 digit millisecond	both
A	AM	meridiem	both
a	am	meridiem lowercase	both