How can I use an AngularJS filter to format a number to have leading zeros?

Question

I checked the documentation. What I would like is for my numbers to have four digits and leading zeros.

22 to 0022
1  to 0001

Can someone

Answer 1

Pls use the below filter modify if required for some modifications

  app.filter('customNo', function () {
            return function (input) {
                var n = input;
                return (n < 10) ? '000' + n : (n < 100) ? '00' + n : (n < 1000) ? '0' + n : '' + n;
            }
        });


{{number|customNo}}