Develop Reference

How do you convert a timestamp format within Javascript?

how do I convert something like
2020-12-01T15%3A48%3A39.862Z
to a timestamp format of
2018-09-15T15%3A53%3A00-07%3A00?
I am not very familiar with timestamp formats and manipulation of datetime in Javascript...

You can turn it into a DateTime directly, you just have to decode all that %3A stuff first:
var timeString = '2020-12-01T15%3A48%3A39.862Z';
var decodedTimestring = decodeURIComponent(timeString);
var date = new Date(decodedTimestring);
console.log(date.toLocaleString());

Date format change To UTC

I have getting a dateformat like '23.10.2017'. I need to format this in to
'10/23/2017'
I just tried
var crDate='23.10.2017';
var newDateF=new Date(crdate).toUTCString();
but it showing InvalidDate
can anyone help to change the format.
Thanks in advance

I don't think using Date() is the solution. You can do
var crDate = '23.10.2017';
var newDateF = crDate.split(".");
var temp = newDateF[0];
newDateF[0] = newDateF[1];
newDateF[1] = temp;
newDateF.join("/");
This splits the string into an array, swaps the first and second elements, and then joins back on a slash.

A regex replacement will do the trick without any Date functions.
var date = '23.10.2017';
var regex = /([0-9]{2})\.([0-9]{2})\.([0-9]{4})/;
console.log(date.replace(regex,'$2/$1/$3'));

Just use moment.js if you can :
// convert a date from/to specific format
moment("23.10.2017", "DD.MM.YYYY").format('MM/DD/YYYY')
// get the current date in a specific format
moment().format('MM/DD/YYYY')
Moment is a very usefull and powerfull date/time library for Javascript.

convert string to Default date Format

Hi I have use the string object for represent the date in the following format
var date="18/01/2011";
var dateFormat="dd/MM/yyyy";
Note:
In my scenorio i have use the dd/MM/yyyy format;
dateFormat will be different in my client side.
how to convert these date default JavaScript dateFormat as MM/dd/yyyy in Generic way.
I have tried in by split date by and swap the month ,date to achieve this requirement. But in my client side i dont know about the format of the date how to convert any other format to default Javascript format

Hope this helps:
var date="18/01/2011";
var parts = date.split('/');
var result = new Date(parts[2], parts[1], parts[0]);

var datestring = "2014-02-27:04:05";var d = Date(datestring);

Javascript datetime string to Date object

I am debugging a small application with some functionality which would only run in Chrome. The problem lies in a datepicker where you choose a date and time and the datepicker concaternates it into a datetime-string.
Anyway the string looks like this: 2012-10-20 00:00.
However, the javascript that uses it now just takes the string and initialize an object with it like this: new Date('2012-10-20 00:00');
This is resulting in an invalid date in Firefox, IE and probably all browsers but Chrome.
I need advise in how I best could transform this datestring to a Date object in javascript. I have jQuery enabled.
Thanks for your sage advise and better wisdom.

If the string format is always as you state, then split the string and use the bits, e.g.:
var s = '2012-10-20 00:00';
var bits = s.split(/\D/);
var date = new Date(bits[0], --bits[1], bits[2], bits[3], bits[4]);

It's just the simplify version:
var newDate = new Date('2015-04-07 01:00:00'.split(' ')[0]);

if str = '2012-10-20 00:00'
new Date(str.split(' ')[0].split('-').join(',') + ',' + str.split(' ')[1].
split('-').join(','))
should do the trick

use parseExact method
var date = new Date.parseExact(dateString, "yyyy-mm-dd hh-mm");

How to get the date object

My value contains "08.07.1987", how to retrieve the date object for this string. new Date(val) gives correct date object values only for the string value that contains "/" format. can any one let me know hot to create date object for the values which contains "." or "-". in its format.

How about just adjusting the string to suit your needs?
var date1 = new Date("08.07.1987".replace('.','/'));
var date2 = new Date("08-07-1987".replace('-','/'));
You will need to be careful when asking Javascript to interpret a date in this format. As you can probably imagine, a date listed as "08.07.1987" doesn't really specify whether it's August 7th or July 8th.
In general, your best bet will be to specify a date format and parse accordingly.

you have to split the string into tokens for month date and year and then create it using JS Date API.

var date="08.07.1987";
var newDate = date.replace(/(\.|-)/g,"/"));
var dateObject = new Date(newDate);

Replace the delimiters?
var dateStr = "08.07.1987",
dateObj = new Date(dateStr.replace(/[-.]/g,"/"));
Of course you can encapsulate that in a function if need be...

try this new Date("08.07.1987".replace('.','/','g')); tested on firefox only