check format of date with moment.js

Question

I am taking input from calendar in my screen which is of this type

DD-MMM-YYYY HH:mm a

but user can provide date from keyboard. Now I have to

Answer 1

This is much better:

if (!moment(checked_date, DATE_FORMAT).isValid()) throw Error(Argument passed is invalid: checked_date. Date format must be ${DATE_FORMAT});