JavaScript Date Get and Set Methods

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Date get methods

To get information from a date object, the get method is required.

let assume const d = new Date().

See the table below:

Method	Description	Example
getFullYear	Get full year (yyyy)	d.getFullYear()
getMonth	Get month (0 - 11)	d.getMonth()
getDate	Get date (1 - 31)	d.getDate()
getHours	Get hours (0 - 23)	d.getHours()
getMinutes	Get minutes (0 - 59)	d.getMinutes()
getSeconds	Get seconds (0 - 59)	d.getSeconds()
getMilliseconds	Get milliseconds (0 - 999)	d.getMilliseconds()
getTime	Get time (>= 1613560292960)	d.getTime()
getDay	Get day (0-6)	d.getDay()
Date.now	Get current year day in milliseconds (0-6)	Date.now()

getMonth(): 0 is January and 11 is February.

getDay(): 0 is Sunday and 6 is Saturday.

The table may also include the Universal Time Coordinated (UTC) date. For example d.getUTCDay().

See the examples below:

const d = new Date();
const months = [
  "Jan", "Feb", "March", "April", "May", "June", 
  "July", "Aug", "Sep", "Oct", "Nov", "Dec"
  ];

months[d.getMonth()];

See another example below:

const d = new Date();
const days = ["Sun", "Mon", "Tues", "Thur", "Fri", "Sat"];
days[d.getDay()];

Parse

The parse method allows you to parse a data string format to get the timestamp in milliseconds from 1 January 1970 till the time specified in the string format.

The syntax is shown below:

Date.parse(str)

See the example below:

const parseTime = Date.parse('2055-01-22T10:48:13.201-06:00');

console.log(parseTime); // 2684249293201

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Date set methods

To set information from a date object, the set method is required.

let assume const d = new Date().

See the table below:

Method	Description	Example
setFullYear	Set full year (yyyy)	d.setFullYear(...)
setMonth	Set month (0 - 11)	d.setMonth(...)
setDate	Set date (1 - 31)	d.setDate(...)
setHours	Set hours (0 - 23)	d.setHours(...)
setMinutes	Set minutes (0 - 59)	d.setMinutes(...)
setSeconds	Set seconds (0 - 59)	d.setSeconds(...)
setMilliseconds	Set milliseconds (0 - 999)	d.setMilliseconds(...)
setTime	Set time (>= 1613560292960)	d.setTime(...)
setDay	Set day (0-6)	d.setDay(...)

The table may also include the Universal Time Coordinated (UTC) date. For example d.setUTCDay().

See the examples below:

const d = new Date();
d.setFullYear(2069);
d; // 2069-mm-ddThrs:mins:secs.msecsZ

It is optional to include Month and day.

const d = new Date();
d.setFullYear(2069, 03, 20);
d; // 2069-04-20Thrs:mins:secs.msecsZ

Mixed set and get methods

It is possible to use both methods together.

See the example below:

const d = new Date();
d.setDate(d.getDate() + 30);
d;

The addition above is handled automatically by the Date object by shifting months or year.

Happy coding!!!

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