JAVASCRIPT

date methods js

new Date().toISOString()
'2022-10-11T16:22:51.161Z'
new Date().toJSON()
'2022-10-11T16:22:51.161Z'

new Date().toDateString()
'Tue Oct 11 2022'
new Date().toGMTString()
'Tue, 11 Oct 2022 16:22:51 GMT'
new Date().toUTCString()
'Tue, 11 Oct 2022 16:22:51 GMT'

new Date().toTimeString()
'21:52:51 GMT+0530 (India Standard Time)'
new Date().toString()
'Tue Oct 11 2022 21:52:51 GMT+0530 (India Standard Time)'

new Date().toLocaleDateString()
'11/10/2022'
new Date().toLocaleTimeString()
'21:52:51'
new Date().toLocaleString()
'11/10/2022, 21:52:51'

javascript date time

//Date, Time, Timestamp
var today = new Date();
var DD = String(today.getDate()).padStart(2, '0');
var MM = String(today.getMonth() + 1).padStart(2, '0'); //January is 0!
var YYYY = today.getFullYear();
var hh = today.getHours();
var mm = today.getMinutes();
var ss = today.getSeconds();
today = YYYY + MM + DD + hh + mm + ss;
console.log('Date-Time: ', today);

date and time in javascript

var dateWithTime = new Date().toLocaleString().replace(",", "")
console.log(dateWithTime)  
//output :6/24/2022 9:36:33 PM

date js

let today = new Date().toLocaleDateString();

//or function
function getDate()
{
	let  today 		= new Date();
	let  dd 		= String(today.getDate()).padStart(2, '0');
	let  mm 		= String(today.getMonth() + 1).padStart(2, '0'); //janvier = 0
	let  yyyy 		= today.getFullYear();
  
	return `${yyyy}-${mm}-${dd}`; 
	//return dd + '/' + mm + '/' + yyyy; // change form if you need
}

new date() javascript

var date = new Date(); //Will use computers date by default.
//parameters will specify date you put to input
var date = new Date(year, month, day, hours, minutes, seconds, milliseconds);

date javascript

let mdy = ['month', 'date', 'year'];
let hms = ['hour', 'minute', 'second'];
mdy = new Date().toLocaleDateString("en-US").split("/");
hms = new Date().toLocaleTimeString("en-US").split(/:| /);
console.log(mdy,hms);

javascript date

const currentDate = new Date();
const currentMonth = currentDate.getMonth() + 1;
const currentDay = currentDate.getDate();
const currentYear = currentDate.getFullYear();

date in javascript

var d = new Date();

//1628202691394 miliseconds passed since 1970
Number(d) 
Date("2017-06-23");                 // date declaration
Date("2017");                       // is set to Jan 01
Date("2017-06-23T12:00:00-09:45");  // date - time YYYY-MM-DDTHH:MM:SSZ
Date("June 23 2017");               // long date format
Date("Jun 23 2017 07:45:00 GMT+0100 (Tokyo Time)"); // time zone

date and time javascript

// To test a function and get back its return
function printElapsedTime(fTest) {
  let nStartTime = Date.now(),
      vReturn = fTest(),
      nEndTime = Date.now()

  console.log(`Elapsed time: ${ String(nEndTime - nStartTime) } milliseconds`)
  return vReturn
}

let yourFunctionReturn = printElapsedTime(yourFunction)

date in javascript

let daysAdded = 10
let date = new Date(Date.now())
let result = new Date(
  new Date(Date.now()).setDate(date.getDate() + daysAdded)
);

Date javascript

var d= new Date();  // generate today's DATE
console.log (d);

var s= new Date ("2020-09-15"); // generate the specific DATE:spetember 9 2020
var y=new Date().getFullYear(); // generate the year of specific DATE
var m=new Date().getMonth(); // generate the month of specific DATE
var d=new Date().getDay(); // generate the day of specific DATE
var D=new Date().getDate(); // generate  the specific DATE

date object js

var today = new Date();
var year = today.getFullYear();

var element = document.getElementById('main');
element.innerHTML = `<p>Today's date is ${today}</p>`;

js date

const today = new Date()
const birthday = new Date('December 17, 1995 03:24:00') // DISCOURAGED: may not work in all runtimes
const birthday2 = new Date('1995-12-17T03:24:00')   // This is ISO8601-compliant and will work reliably
const birthday3 = new Date(1995, 11, 17)            // the month is 0-indexed
const birthday4 = new Date(1995, 11, 17, 3, 24, 0)
const birthday5 = new Date(628021800000)            // passing epoch timestamp

Dates in Javascript

var date1 = new Date();
var date2 = new Date();

if (date1.getTime() === date2.getTime()) { // 1605815698393 === 1605815698393 
    console.log("Dates are equal");
}
else {
    console.log("Dates are Not equal");
}

javascript new Date()

const timeNow = new Date();
console.log(timeNow); // shows current date and time

javascript date methods

Date(): Returns today's date and time
getDate(): Returns the day of the month for the specified date according to the local time
getDay(): Returns the day of the week for the specified date according to the local time
getFullYear(): Returns the year of the specified date according to the local time
getHours(): Returns the hour in the specified date according to the local time
getMilliseconds(): Returns the milliseconds in the specified date according to the local time
getMinutes(): Returns the minutes in the specified date according to the local time
getMonth(): Returns the month in the specified date according to the local time
getSeconds(): Returns the seconds in the specified date according to the local time
getTime(): Returns the numeric value of the specified date as the number of milliseconds since January 1, 1970, 00:00:00 UTC
getTimezoneOffset(): Returns the time-zone offset in minutes for the current locale
getUTCDate(): Returns the day (date) of the month in the specified date according to the universal time
getUTCDay(): Returns the day of the week in the specified date according to the universal time
getUTCFullYear(): Returns the year in the specified date according to the universal time
getUTCHours(): Returns the hours in the specified date according to the universal time
getUTCMilliseconds(): Returns the milliseconds in the specified date according to the universal time
getUTCMinutes(): Returns the minutes in the specified date according to the universal time
getUTCMonth(): Returns the month in the specified date according to the universal time
getUTCSeconds(): Returns the seconds in the specified date according to the universal time
setDate(): Sets the day of the month for a specified date according to the local time
setFullYear(): Sets the full year for a specified date according to the local time
setHours(): Sets the hours for a specified date according to the local timesetMilliseconds()

javascript date

<!DOCTYPE html>
<html>
  
<head>
    <title>How to get current date in JavaScript?</title>
</head>
  
<body>
    <h1 style="color: green">
        GeeksforGeeks
    </h1> 
    <b>How to get current date in JavaScript?</b>
      
<p> Current Date is: <span class="output"></span></p>
  
    <button onclick="getCurrentDate()">Get current Date</button>
      
    <script type="text/javascript">
    function getCurrentDate() {
        let date = new Date().toDateString();
        document.querySelector('.output').textContent = date;
    }
    </script>
</body>
  
</html>

new date javascript

/*Get date from JS API - Date() class*/
let local_date = new Date();
alert("it is " + local_date + "!")

JavaScript Date Methods

JavaScript Date Methods
There are various methods available in JavaScript Date object.

Method	Description
now()	Returns the numeric value corresponding to the current time (the number of milliseconds elapsed since January 1, 1970 00:00:00 UTC)
getFullYear()	Gets the year according to local time
getMonth()	Gets the month, from 0 to 11 according to local time
getDate()	Gets the day of the month (1–31) according to local time
getDay()	Gets the day of the week (0-6) according to local time
getHours()	Gets the hour from 0 to 23 according to local time
getMinutes	Gets the minute from 0 to 59 according to local time
getUTCDate()	Gets the day of the month (1–31) according to universal time
setFullYear()	Sets the full year according to local time
setMonth()	Sets the month according to local time
setDate()	Sets the day of the month according to local time
setUTCDate()	Sets the day of the month according to universal time

date javascript

const regexDate = /^d{2}/d{2}/d{4}$/

Date Methods javascript

const timeInMilliseconds = Date.now();
console.log(timeInMilliseconds); // 1593765214488
const time = new Date;
// get day of the month
const date = time.getDate();
console.log(date); // 30
// get day of the week
const year = time.getFullYear();
console.log(year); // 2020
const utcDate = time.getUTCDate();
console.log(utcDate); // 30
const event = new Date('Feb 19, 2020 23:15:30');
// set the date
event.setDate(15);
console.log(event.getDate()); // 15
// Only 28 days in February!
event.setDate(35);

console.log(event.getDate()); // 7

define datemethod in javascript

// EXAMPLE :
        
        // Print today full date & full time:
let now = new Date();
        let today = [
            "Date:" + now.getDate(),
            "Month: " + (now.getMonth()+1),
            "Year: " + now.getFullYear(),
            "Day: " + now.getDay(),
            "Hours: " + now.getHours(), "Minutes: " + now.getMinutes(),
            "Seconds: " + now.getSeconds(),
            "Milisecondss: " + now.getMilliseconds()]

        let today_data =today.forEach((ele => document.write (ele + "<br>")));
    
    document.write(today_data());
// OUTPUT:
        // Date: 12
        // Month: 10
        // Year: 2022
        // Day: 3
        // Hours: 23
        // Minutes: 31
        // Seconds: 12
        // Milisecondss: 178

define datemethod in javascript

// EXAMPLE : 

        // Print today full date & full time:
        let today = [
            "Date:" + now.getDate(),
            "Month: " + (now.getMonth() + 1),
            "Year: " + now.getFullYear(),
            "Day: " + now.getDay(),
            "Hours: " + now.getHours(), "Minutes: " + now.getMinutes(),
            "Seconds: " + now.getSeconds(),
            "Milisecondss: " + now.getMilliseconds()]

        let today_data = today.forEach((ele => document.write(ele + "<br>")));

        document.write(today_data());
        // OUTPUT:
        // Date: 12
        // Month: 10
        // Year: 2022
        // Day: 3
        // Hours: 23
        // Minutes: 31
        // Seconds: 12
        // Milisecondss: 178

js date

var d = new Date,
    dformat = [d.getMonth()+1,
               d.getDate(),
               d.getFullYear()].join('/')+' '+
              [d.getHours(),
               d.getMinutes(),
               d.getSeconds()].join(':');