Js: get the domain name minus all params and irrelevant data

Question

Is there a way to get only the domain name from a given string.

Lets say the string is:

var url = "https://subdimain.thedomain.com/this/path/file.html"

All I want to get is:

thedomain.com

however, there are many factors I am not sure how to account for. For example:

• https or http
• subdomain or none
• tld (.com/.co.uk/.in/.fr) etc....
• path etc.. (/this/path/file.html)

Thanks for your help :)

Answer 1

Here's an easy way:

function domain(url){
  var a = document.createElement('a');
  a.href = url;
  var s = a.hostname.split('.'), d = s.length-2;
  return s[d]+'.'+s[d+1];
}
var sub = domain('https://subdimain.thedomain.com/this/path/file.html');
console.log(sub);