Get the first day of the current year using Moment.js
You could do this:
moment().startOf('year');
format by doing something like this:
moment().startOf('year').format('MM/DD/YYYY');
To get the start date and end date of any given year. You can pass a year as a parameter to moment.
startDateOfTheYear = moment([year]);endDateOfTheYear = moment([year]).endOf('year');