如何基于包含scheme+host+port的字符串创建URL

// 解析包含scheme+host+port的字符串
var urlStr = "https://www.example.com:8080";

// 创建URL对象
var url = new URL(urlStr);

// 获取URL对象的属性
var scheme = url.protocol;
var host = url.hostname;
var port = url.port;

// 可选地，设置其他属性
url.pathname = "/path/to/resource";
url.search = "param1=value1&param2=value2";
url.hash = "section1";

// 将URL对象转换为字符串
var urlString = url.toString();

console.log(urlString); // 输出：https://www.example.com:8080/path/to/resource?param1=value1&param2=value2#section1