JSFiddle - React, Tailwind, and code Playground
JavaScript
var url_string = "http://site.ru/edit?url=site.ru/doc1&title=Тут+назваие+статьи&description=Описание&user=Admin"; //window.location.href
var url = new URL(url_string);
var siteurl = url.searchParams.get("url");
var title = url.searchParams.get("title");
var description = url.searchParams.get("description");
console.log(siteurl,title,description);