Angular Comes with upper and lower case directives, so here's a capitalise directive

capitalise-directive.js

angular.module('myApp').
filter('capitalise', function() {
  return function(input) {
    return (!!input) ? input.replace(/([^\W_]+[^\s-]*) */g, function(txt) {
      return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
    }) : '';
  };
});