sable() {
                this.disabled = true;
                this.input.disabled = true;
                this.clear();
                this.close();
            }
        }

        // Initialize dropdowns
        let provinceDropdown, wardDropdown;

        // Hiển thị loading
        function showLoading() {
            document.querySelector('.loading').style.display = 'block';
            document.getElementById('addressForm').style.display = 'none';
        }

        // Ẩn loading
        fun