var d = new Date();
d.setMonth(0);
d.setDate(1);

var last = d.setHours(0, 0, 0, 0);
var next = d.setYear(d.getFullYear() + 1);
var dozenth = (next - last) / 12;

var months = [];
for (var i = 0; i <= 12; i++) {
  months.push(new Date(last + dozenth * i))
}

console.log(months.join('\n')); /* =>
Mon Jan 01 2018 00:00:00 GMT-0800 (PST)
Wed Jan 31 2018 10:00:00 GMT-0800 (PST)
Fri Mar 02 2018 20:00:00 GMT-0800 (PST)
Mon Apr 02 2018 07:00:00 GMT-0700 (PDT)
Wed May 02 2018 17:00:00 GMT-0700 (PDT)
Sat Jun 02 2018 03:00:00 GMT-0700 (PDT)
Mon Jul 02 2018 13:00:00 GMT-0700 (PDT)
Wed Aug 01 2018 23:00:00 GMT-0700 (PDT)
Sat Sep 01 2018 09:00:00 GMT-0700 (PDT)
Mon Oct 01 2018 19:00:00 GMT-0700 (PDT)
Thu Nov 01 2018 05:00:00 GMT-0700 (PDT)
Sat Dec 01 2018 14:00:00 GMT-0800 (PST)
Tue Jan 01 2019 00:00:00 GMT-0800 (PST)
*/