1 2 3 4 5 6 7 8 9 10 11 | 1 3 1 3 3 6 3 | function CityList(addresses) { this.addresses = addresses; }; CityList.prototype.getList = function() { var result = {}; for (var i = 0; i < this.addresses.length; i++) { result[this.addresses[i].city] = 1; } return result; }; |