Getting the number ordinal with Moment.js - momentjs

Question

Is it possible to get a number's ordinal with Moment.js? For example if I pass in the number 7 and Momentjs would return '7th'
So far I have tried all these but none have worked
console.log(moment("12", "D Do")); // returns n {_isAMomentObject: true, _i: "12", _f: "D Do", _isUTC: false, _pf: Object…}
console.log(moment("3", "D Do")); // returns n {_isAMomentObject: true, _i: "3", _f: "D Do", _isUTC: false, _pf: Object…}
console.log(moment(3).format("D Do")); // returns '1 1st'
console.log(moment('3').format("D Do")); // returns '1 1st'
console.log(moment().day('3').format("Do")); // returns '9th'
console.log(moment().day(3).format("D Do")); // returns '9 9th'
EDIT: I should have mentioned that I am trying to process a date. So I get the date in this format DD-MM-YYYY. So if the date is 07-12-2015, I want to display it as 7th.

Answer 1

moment.localeData().ordinal(23)
// 23rd

Answer 2

I don't think Moment.js provides such an interface because it's use case is very limited.
If you don't have a date (e.g. a ranking) you could use the following:
function ordinal(number) {
switch (number) {
case 1:
case 21:
return number + 'st';
break;
case 2:
case 22:
return number + 'nd';
break;
case 3:
case 23:
return number + 'rd';
break;
default:
return number + 'th';
}
}
EDIT: Answer to the edited question:
You can do the following:
const date = '3-12-2015';
moment(date, 'DD-MM-YYYY').format('Do');
Demo
Documentation:
Parse: http://momentjs.com/docs/#/parsing/string-format/
Display: http://momentjs.com/docs/#/displaying/format/

Answer 3

Building off of the accepted answer above, you can avoid adding the day to an arbitrary date and instead just do:
moment('3', 'DD').format('Do');
EDIT
As pointed out in the comments, the above answer will return an invalid date for any number above 30, so a more stable solution that includes the 31st would be:
moment(`2012-10-${day}`).format('Do')