javascript
try {
    document.addEventListener("DOMContentLoaded", function() {
        // Fetch luxury brands from a dataset or API
        fetch("https://api.example.com/luxury-brands")
            .then(response => response.json())
            .then(data => {
                let brands = data; // Update brands object with fetched data

                document.getElementById('file-input').addEventListener('change', function(event) {
                    let brand = document.getElementById('brand').value.toLowerCase();
                    if (brands[brand]) {
                        document.getElementById('tips').textContent = brands[brand];
                    } else {
                        document.getElementById('tips').textContent = 'No tips available for this brand.';
                    }
                });
            })
            .catch(error => {
                console.error("Failed to fetch luxury brands:", error);
            });
    });
} catch (error) {
    throw error;
}