javascript url 가져오기 (get url)

var host = window.location.host;
var hostname = window.location.hostname;
var href = window.location.href;
var host = window.location.host;
var port = window.location.port;
var pathname = window.location.pathname;
var search = window.location.search;
var protocoal = window.location.protocol;

sometime it's very useful.