To turn a Javascript Date object into a moment (moment object) just call moment
and pass the Date as a argument
moment(new Date());
// Moment {_isAMomentObject: true, _i: Sun Jul 31 2016 11:08:02 GMT+0300 (Jerusalem Daylight Time), _isUTC: false, _pf: Object, _locale: Locale…}
To turn the moment back to a Javascript Date use the .toDate()
method
var now = new Date();
var mom = moment(now)
//undefined
mom
// Moment {_isAMomentObject: true, _i: Sun Jul 31 2016 11:10:32 GMT+0300 (Jerusalem Daylight Time), _isUTC: false, _pf: Object, _locale: Locale…}
mom.toDate()
// Sun Jul 31 2016 11:10:32 GMT+0300 (Jerusalem Daylight Time)