(JS) Get the host name from a URL

gethostname.js

// Code snippet taken from:
// https://stackoverflow.com/questions/8498592/extract-hostname-name-from-string
function getHostNameFromURL(url) {

    if (!url) {
        return null;
    }
  
    let hostname;
  
    if (url.indexOf("://") > -1) {
        hostname = url.split('/')[2];

    } else {
        hostname = url.split('/')[0];
    }
  
    hostname = hostname.split(':')[0];
    hostname = hostname.split('?')[0];

    return hostname;
}