var url = new URL("http://aaa.bbb.ccc.com/asdf/asdf/sadf.aspx?blah");
console.log(url.protocol);  // "http:"
console.log(url.hostname);  // "aaa.bbb.ccc.com"
console.log(url.pathname);  // "/asdf/asdf/sadf.aspx"
console.log(url.search);