URL解析器会输出哪些authority字段？
JavaScript
const target = new URL('https://[email protected]:8443/data');
console.log(target.hostname);
console.log(target.port);
console.log(target.username);
const target = new URL('https://[email protected]:8443/data');
console.log(target.hostname);
console.log(target.port);
console.log(target.username);