What regular expression to clear domains from a tree?

Question

JavaScript

Hey!
How can a regular expression for clearing domains from a directory tree look like, leaving the protocol and domain?
I do a bulk Find \\ Replace

For example, you need to leave only https:://site.ruorhttp://en.site.ru

https://site.ru
http://site.ru
http://site.xyz/bla
https://site.com/blabla/test
https://en.site.com/blabla/test
site.ru/blabla/test/test2

Sandbox

Answer 1

<script>

var s_ar=new Array (
 "https://site.ru",
 "http://site.ru",
 "http://site.xyz/bla",
 "https://site.com/blabla/test",
 "https://en.site.com/blabla/test",
 "site.ru/blabla/test/test2"
);

var x_ar=new Array ();
var i, l=s_ar.length;
var r="";
for (i=0; i<l; i++)
{
 x_ar=s_ar [i].split(/\//);
 if (s_ar [i].indexOf ("://")!=-1)
  r+=x_ar [0]+"/"+x_ar [1]+"/"+x_ar [2]+"\n";
 else
  r+=x_ar [0]+"\n";
}

alert (r);

</script>

Answer 2

https://regex101.com/r/Nd19ry/3
or
https://regex101.com/r/Nd19ry/4