Skip to main content

Implementação

URL válida​

function isValidUrl(string) {
  try {
    new URL(string);
    return true;
  } catch (err) {
    return false;
  }
}

URL canParse​

  URL.canParse("https://webtoolsweekly.com");

Construir URL​

new URL('/about-2', request.url)
        //caminho   //url base

Validando String null, undefined ou vazia​

function checkIfEmpty(str) {
  if (str) {
    console.log('String is NOT empty');
  } else {
    console.log('String is empty');
  }
}
const str1 = 'not empty';
const str2 = ''; // empty
const str3 = null;
const str4 = undefined;

checkIfEmpty(str1); // outputs: String is NOT empty
checkIfEmpty(str2); // outputs: String is empty
checkIfEmpty(str3); // outputs: String is empty
checkIfEmpty(str4); // outputs: String is empty