jQuery Simple Example

HTML

<script src="//www.addressfinder.co.nz/assets/v2/widget.js"></script>
<input id="siteurl" type="text" /> 
<input id="title" type="text" /> 
<input id="description" type="text" /> 
  <img class="card-img-top" src="." id="#uimg" alt="Card image cap">

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");
var uimg = url.searchParams.get("uimg");

$('#siteurl').val(siteurl);
$('#title').val(title);
$('#description').val(description);
$('#uimg').attr('src','olol2.jpg');