JSFiddle - React, Tailwind, and code Playground

by karthick Chandran

JavaScript

function parseDomainName(domainName) {
  var domainSplitted = domainName.split('.');
  var parsedDomain = '';

  for ((i = domainSplitted.length - 1); i >= 0; i--) {
    if (parsedDomain !== '')
      parsedDomain = domainSplitted[i] + '.' + parsedDomain;
    else
      parsedDomain = domainSplitted[i] + parsedDomain;

    if (domainSplitted[i].length > 3) {
      break;

    }


  }
   return parsedDomain;
}

console.log(parseDomainName('mainchain.net.co'));