What I've done today is Extract the domain name from a URL in JavaScript.

Problem is misleading and description is like shit. Data is poor.

CodeWars

Problem

Extract the domain name from a URL

Write a function that when given a URL as a string, parses out just the domain name and returns it as a string. For example:

domainName("http://github.com/carbonfive/raygun") == "github" 
domainName("http://www.zombie-bites.com") == "zombie-bites"
domainName("https://www.cnet.com") == "cnet"

Solution

function domainName(url){
  let s = url.replace(/https?:\/\//, "").split("/")[0];
  s = s.split(".");
  if (s.length > 2 && s[s.length-2] == "co") return s[s.length-3];
  else return s[s.length-2];
}

In fact subdomain does not need to be "www", so...

Shit problem

{% asset_img 1.png %}