JSFiddle - React, Tailwind, and code Playground

HTML

Protocol:&nbsp;<span id="protocol"></span>

<br />
Server:&nbsp;&nbsp;&nbsp;<span id="server"></span>

<br />
Resource:&nbsp;<span id="resource"></span>

<br />
Domain_g:&nbsp;<span id="domain_g"></span>

CSS

* {
    font: 14px Courier;
}

JavaScript

var a = [{
	o1 : "d",
  o2 : "o",
  o3 : "m",
  o4 : "a",
  o5 : "i",
  o6 : "n",
  o7 : ".",
  o8 : "t",
	o9 : "l",
	o0 : "d"
}];

var domain_g = a[0].o1 + a[0].o2 + a[0].o3 + a[0].o4 + a[0].o5 + a[0].o6 + a[0].o7 + a[0].o8 + a[0].o9 + a[0].o0; 
var uri = document.URL;
if(uri.indexOf(domain_g) != -1) {
    //found
    alert("App is running on domain.tld" + uri);
} else {
    //nope
    alert("Someone is running it at " + uri + " and our domain is " + domain_g);
    
} 

	var winObj = [{
      protocol: window.location.protocol,
      server: window.location.host,
      resource: window.location.pathname
  }];
  document.getElementById("protocol").innerHTML = (winObj[0].protocol);
  document.getElementById("server").innerHTML = (winObj[0].server);
  document.getElementById("resource").innerHTML = (winObj[0].resource);
  document.getElementById("domain_g").innerHTML = (domain_g);