js从url忠匹配域名

function getDomainFromUrl(url) {
    try {
        const parsedUrl = new URL(url);
        return parsedUrl.hostname;
    } catch (error) {
        console.error('Invalid URL:', error);
        return null;
    }
}

const url = 'https://www.example.com/path/to/resource?query=string';
const domain = getDomainFromUrl(url);
console.log(domain); // 输出: www.example.com

function getDomainFromUrl(url) {
    if (!url) {
        console.error('URL is empty');
        return null;
    }

    try {
        const parsedUrl = new URL(url);
        return parsedUrl.hostname;
    } catch (error) {
        console.error('Invalid URL:', error);
        return null;
    }
}