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How to validate wanted date time format using javascript?

I am using javascript Date.parse to validate if a date string is a valid date time. I have a specific date time input like this: '8/21/2022 1:45: -04:00' when I do Date.parse('8/21/2022 1:45: -04:00'), the seconds part after : is empty, will get a number which means this date format is correct. I also tried using moment.js v2.29.2 moment('8/21/2022 1:45: -04:00').isValid(), will also get true. Just wondering if anyway to make '8/21/2022 1:45: -04:00' format to invalid? Thank you so much

In JavaScript/AngularJS, I can't seem to remove the "T" in a date field from the DB?

I must be missing something very obvious, but I could use help. I have an Angular web app, which is getting data from a MS Web API. The DTO object has two date fields. When those fields come in, there is a "T" in the date field.
e.g. 2017-05-01T03:43:55
For whatever reason, I can't seem to get rid of that darn "T" when using the date. I'd tried using a date format both on the calendar control that displays the date data, and using the JavaScript format() command. I also tried using the Javascript replace() command to replace the "T" with a space. And I tried using Moment.js to create a new date (which seems to fail and give me an invalid date).
var startDate = moment(badge.startDate).format('yyyy-MM-dd HH:mm:ss');
var startDate = badge.startDate.format(''yyyy-MM-dd HH:mm:ss'');
var startDate = moment(badge.startDate).replace('T',' ');
What am I missing? How should I be doing this? As far as I can tell, any of these should work?

You can create separate filter for that as below.
return (input) ? $filter('date')("2017-05-01T03:43:55", "yyyy-MM-dd HH:mm:ss") : '';
You can change for of date according to your requirements. You can see details Below.
https://docs.angularjs.org/api/ng/filter/date

use, don't build what already exists!
First visit moment js this component is very helpful and has many options which you can do with a date.
var date = moment(yourDate).format('YYYY-MM-DD');
format has a lot of options, you can find it on moment js documents.

Concatenate date and time string into mongo date object

I am sending two fields from client side date and time.
date will be in the format of YYYY-MM-DD i.e 2016-11-08 and time will be in the format of 05:30 PM or 09:45 AM.
I want to combine these two fields and create new field say added_datetime , this field going to be inserted inside MongoDB, so I want it to be in the form of Mongo Date Object so that I can use it for searching with date.
Tried some random things using moments.js but unable to get what I want.

As mentioned in a similiar question you can create a date object with
var date = new Date(datestring);
The code
var startDate = new Date("1900-1-1 8:20:00 PM");
which the original questioner supplied works in chrome and should also work in node since it's the same js engine. This seems to answer your question.
You can find more on dates in the MDN documentation and MongoDB documentation.

AngularJS date formatting

is any chance to format date in ng-repeat?
I was trying to format it like
<div class="col-date">{{row.Calendar.start | date : "dd.MM.y"}}</div>
But it was not working. How do I format date in ng-repeat?

Use moment and angular-moment, are definitely best modules out there for stuff related to dates.
First of all convert $scope.row.Calendar.start to date/moment object if it is a string and then use angular moment to show desired date format
Here is a how you can do so:
Inside controller:
$scope.row.Calendar.start = moment($scope.row.Calendar.start,'YYYY-MM-DD HH:mm:ss');
<div class="col-date">{{row.Calendar.start | amDateFormat : "dd.MM.y"}}

From AngularJS perspective everything seems to be valid.
Please check following:
Format of the data you provide to your date filter - is it UNIX timestamp or something else that might be processed by filter?
Check if the data that you are trying to parse, is available
Please provide us with more information about what are you trying to convert, and what result do you have

It seems like you are trying to apply angular date filter of a string object.
Try to first convert it to a Date object in controller and then apply date filter on it.
EXAMPLE
$scope.dtObj = new Date($scope.row.Calendar.start);
then in HTML write this
<div class="col-date">{{dtObj | date : "dd.MM.y"}}</div>
for more details check out documentation here https://docs.angularjs.org/api/ng/filter/date

try this it worked for me hope for you to
{{row.Calendar.start | date:'MMM-dd-yyyy'}}

How to parse date time in JavaScript

I have Date in this format mm/dd/yy example: 04/11/13
and time in the format HH:MM:SS example: 17:02:30
I have to parse above two values and put in a variable dateTime with following format
YYYY-MM-DDTHH:MM:SSS
2013-04-11T17:02:30.000
What is best way to do it in AngularJS or in Javascript. I also need to verify the user input and make sure it is a valid mm/dd/yy date and a valid HH:MM:SS time
I know there are tons of duplicate/similar questions but I couldn't find one which answers above, please let me know if you found one.

You don't need an external library to do this. See this doc link for the forms of date that JavaScript can process normally.
For a specific solution to your question:
var date = new Date("04/11/13" + " " + "17:02:30");
date.toISOString();
>> "2013-04-11T21:02:30.000Z"
See this MDN page for more info on the Date object.

The best way to do this in AngularJS is with a filter. You bind to the dateTime, and then filter it with the date filter.
<span>{{myDate | date:yyyy-MM-ddThh:mm:sss}}</span>
Or in your controller you say:
$filter('date')(date[, format])
Here is more info: http://docs.angularjs.org/api/ng.filter:date