提取地址栏域名asp

function extractDomain(url) {
    const a = document.createElement('a');
    a.href = url;
    return a.hostname;
}

const url = 'https://www.example.com/path/to/page?query=123';
const domain = extractDomain(url);
console.log(domain); // 输出: www.example.com

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

const url = 'https://www.example.com/path/to/page?query=123';
const domain = extractDomain(url);
console.log(domain); // 输出: www.example.com