Css ninja

function parseProtocol(url) {
  const parsedURL = /^(\w+)\:\/\/([^\/]+)\/(.*)$/.exec(url);
  if (!parsedURL) {
    return false;
  }
  console.log(parsedURL);
  // ["https://developer.mozilla.org/en-US/docs/Web/JavaScript",
      "https", "developer.mozilla.org", "en-US/docs/Web/JavaScript"]

  const [, protocol, fullhost, fullpath] = parsedURL;
  return protocol;
}

console.log(parseProtocol('https://developer.mozilla.org/en-US/docs/Web/JavaScript'));
// "https"

Source: developer.mozilla.org

Similar codes

0 vote338 views1 answer
How to make a flex container full page
CSS
6 votes331 views2 answers
Update checkbox size css
CSS
0 vote319 views1 answer
Comentarios en archivo scss
CSS
80 votes341 views2 answers
Text-transform
CSS
7 votes323 views2 answers
Remove blue border on a input
CSS
0 vote310 views1 answer
Como fazer listrada css
CSS
1 vote317 views1 answer
Css thinner hr
CSS
0 vote315 views1 answer
Learn css
CSS
1 vote366 views2 answers
Onclick url
CSS
1 vote332 views1 answer
Css retirer les puces
CSS