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How to create function that return a Date object?

1 - Make a function that given a date in text format "dd/mm/yyyy" returns a Date object with that date, using the Split() method.
2 - You have to do a "console.log() of the Date object created" and it should output something similar to
Mon Dec 2 2019 11:36:25 GMT+0100 (Central European Standard Time).
I have tried this but I don't know why when I write a console.log
I get the following:
2022-12-05T00:00:00.000Z
And I try to get it to appear something like this:
Mon Dec 2 2019 12:30:05 GMT+0100 (Central European Standard Time)
function convertDate(date) {
let dateArray = date.split("/");
let DateString = dateArray[2] + "/" + dateArray[1] + "/" + dateArray[0] + "Z";
let dateDate = new Date(dateString);
return dateDate;
}
console.log(convertDate("05/12/2022"));

you can use new Date() to get the date like "Wed Dec 28 2022 11:36:25 GMT+0100"
let date = new Date("05/12/2022");
console.log(date);
output will be Thu May 12 2022 00:00:00 GMT+0500 (Pakistan Standard Time) {}

Convert Javascript Date object to other timezone Date Object

How to convert Javascript Date Object to another timezone but the result must be Date object with the correct timezone
let date = new Date();
console.log(date);
date = date.toLocaleString('en-US', { timeZone: 'America/Vancouver' });
date = new Date(date);
console.log(date);
that gives the following result, the last result line (Date/Time) is correct but the time zone is incorrect which is still GMT-0500 (Colombia Standard Time) but must be GMT-0800 (Pacific Standard Time) timezone
Wed Jan 20 2021 00:14:11 GMT-0500 (Colombia Standard Time)
Tue Jan 19 2021 21:14:11 GMT-0500 (Colombia Standard Time)

You may try this :
let date = new Date();
console.log(date);
date = date.toLocaleString("en-CA", {
timeZone: "America/Vancouver",
timeZoneName: "long",
});
console.log(date);
Output:
Wed Jan 20 2021 09:18:16 GMT+0300 (Arabian Standard Time)
2021-01-19, 10:18:16 p.m. Pacific Standard Time
Once you get the correct TimeZone, you may change how the date and time are displayed by string manipulation if you need too.
Update:
This may not look pretty but i believe it should satisfy the requirements:
let date = new Date().toLocaleString("en-US", {
timeZone: "America/Vancouver",
timeZoneName: "short",
});
let date1 = new Date(date);
//adding a new property to Date object called tz and initializing it to null
Date.prototype.tz = null;
//stting the tz value to the Time zone output from toLocalString
date1.tz = date.slice(date.length - 3);
console.log(date1.toISOString() + " " + date1.tz);
console.log(date);
console.log(typeof date1);
Output:
2021-01-20T09:01:06.000Z PST
1/20/2021, 1:01:06 AM PST
Object
What i've done is create a new property of the object date to replace the built-in time zone property in Date, hence you get an object with a user specified Time zone.

Let value changes out of nowhere

Can someone please explain to me, why start and end variables print to console different values for these loggers?
I get printed out:
start1 = Mon Feb 17 2020 10:00:00 GMT+0100 (Central European Standard Time)
end1 = Mon Feb 17 2020 11:30:00 GMT+0100 (Central European Standard Time)
start2 = Mon Feb 17 2020 11:30:00 GMT+0100 (Central European Standard Time)
end2 = Mon Feb 17 2020 11:30:00 GMT+0100 (Central European Standard Time)
I want to add, that the code I presented is in some method of course, and the names start and end don't interfere with other variable names.
let start = this.service.getDateTime(
eventFromUi.start_date,
eventFromUi.start_time_hour,
eventFromUi.start_time_minute
);
console.log("start1 = " + start);
let end = this.service.getDateTime(
eventFromUi.start_date,
eventFromUi.end_time_hour,
eventFromUi.end_time_minute
);
console.log("end1 = " + end);
console.log("start2 = " + start);
console.log("end2 = " + end);
EDIT:
The getDateTime() method returns object of TypeScript ootb type Date.
I used Chrome debugger to look into this, and I see that when I first execute the getDateTime() method, I get value Mon Feb 17 2020 10:00:00 GMT+0100 (Central European Standard Time) returned and assigned to let start.
Then the method getDateTime() is executed again and retuns value Mon Feb 17 2020 11:30:00 GMT+0100 (Central European Standard Time), and this value gets assigned to both start and end variables.
How does this happen?
EDIT2:
Function getDateTime:
getDateTime(dateWithoutTime: Date, hour: number, minute: number): Date {
let date = dateWithoutTime;
console.log(date);
console.log(hour);
console.log(minute);
date.setHours(hour);
date.setMinutes(minute);
return date;
}

This is happening because you're dealing with object references.
getDateTime(dateWithoutTime: Date, hour: number, minute: number): Date {
let date = dateWithoutTime;
// date is now a copy of the *reference* to the same object that
// dateWithoutTime is a reference to. In other words: it is pointing
// to the same object in memory
date.setHours(hour);
date.setMinutes(minute);
// since date is pointing to the same object as dateWithoutTime, this is
// modifying both date and dateWithoutTime
return date;
}
This also means that in your code, eventFromUi.start_date, start and end are all references pointing to the same Date object.
To solve your problem, make sure you create a clone of dateWithoutTime when it is passed into your function:
getDateTime(dateWithoutTime: Date, hour: number, minute: number): Date {
let date = new Date(dateWithoutTime);
// date is now a reference to a *new Date object* with the same
// date/time/etc. values as dateWithoutTime
date.setHours(hour);
date.setMinutes(minute);
// since date now points to a new object, this is only modifying date
// while leaving dateWithoutTime alone and unchanged
return date;
}

Moment.js Real time with timezone

I need to store an unix value from a Time input.
The problem is that :
// I create a Moment Date from my input :
var date = moment({hour: 10, minute: 00)
// gives this _d : Mon May 04 2015 10:00:00 GMT+0200 (CEST)
// I convert it to unix value
date = date.unix()
// -> 1430726400
moment( date ).format('HH:mm')
// -> "14:25" // Should give me 10:00
// Online conversion unix time gives me : Mon, 04 May 2015 08:00:00 GMT
So how can I keep my 10:00 in memory as unix value using those transformations ?

Per documentation:
moment.unix( date ).format('HH:mm')

I kind of sorted it this way :
// I create a Moment Date from my input :
var date = moment({hour: 10, minute: 00)
// gives this _d : Mon May 04 2015 10:00:00 GMT+0200 (CEST)
// Convert to unix
date = date.toDate();
date = date.getTime();
console.log(moment( date ).format('HH:mm')); // Gives me 10:00
I hope it will keep the good time ? In France the time changes twice a year ( go forward 1 hour, go backwards 1 hour)

JSP and JavaScript convert date

I have a problem while trying to convert a specific type of date.
My goal is to get it into this format: dd/MM/yyyy
The current date format: Thu Apr 04 00:00:00 EEST 2013
When I alerted using JavaScript, it responds that it is not a date. I used many solutions like to format it on JSP:
<fmt:formatDate value="${theDate}" pattern="dd/MM/yyyy"/>
Result error:
Attempt to convert String "Thu Apr 04 00:00:00 EEST 2013" to type "java.util.Date", but there is no PropertyEditor for that type.
And even in Javascript:
var dateCreation = new Date(theDate);
The problem in JavaScript is that it says that dateCreation is not a date. Any ideas?

Problem with your date string "Thu Apr 04 00:00:00 EEST 2013"
when i tried with your date string got IllegelArgumentException
change "Thu Apr 04 00:00:00 EEST 2013" to "Thu Apr 04 00:00:00 EST 2013" then working fine.
I'm unable to guess why you got that EEST (one E extra).
public static void main(String[] args) {
Date date = new Date("Thu Apr 04 00:00:00 EST 2013");
System.out.println(date);
}
You are getting error in javascript because your passing the same string to JS i guess.

fmt:formatDate expects a java date object as value. In your case looks like theDate is not a date object but a String representation of date object. Please provide a date object and that should work.
Also in JavaScript what is the value of theDate param and where is it defined?

The date object in JavaScript has the following constructors:
var d = new Date();
var d = new Date(milliseconds); // from epoch
var d = new Date(dateString); // "yyyy-mm-dd hh:mm:ss"
var d = new Date(year, month, day, hours, minutes, seconds, milliseconds);
Make sure you use one of them. Bear in mind that the month is 0-based for the last mentioned constructor.

EST is GMT-05:00 while EEST is GMT+03:00. The difference occurs e.g. when parsing "Thu Apr 04 23:00:00 EEST 2013". Java (7) can parse EEST, but it can not format in EEST.
String s = "Thu Apr 04 23:00:00 EEST 2013";
SimpleDateFormat sdfParse = new SimpleDateFormat("E MMM d H:m:s z yyyy", Locale.ENGLISH);
Date d = sdfParse.parse(s);
SimpleTimeZone stz = new SimpleTimeZone(3 * 3600000 /* GMT+03:00 */, "EEST");
GregorianCalendar cal = new GregorianCalendar(stz, Locale.ENGLISH);
cal.setTime(d);
String ddmmyyyy = String.format("%02d/%02d/%4d", cal.get(Calendar.DAY_OF_MONTH), cal.get(Calendar.MONTH) + 1, cal.get(Calendar.YEAR));
System.out.println(s+"\n"+ddmmyyyy);
In JavaScript:
function format2(s) {s="0"+s;return s.substr(s.length-2);}
function dateFormat(theDate) {
//theDate = "Thu Apr 04 00:00:00 EEST 2013";
var timestamp = Date.parse(theDate.replace(/EEST/, "GMT+0300"));
var datePseudoGMT = new Date(timestamp+3 * 3600000);
var dateCreation = format2(datePseudoGMT.getUTCDate())
+"/"+format2(datePseudoGMT.getUTCMonth()+1)
+"/"+format2(datePseudoGMT.getUTCFullYear());
console.log(dateCreation);
return dateCreation;
}