new.js

try {
  const response = await fetch("https://icanhazdadjoke.com/");
  // do something here with reponse.
} catch (e) {
   // do somethign with the error.
}

regular.js

new Promise(fetch("https://icanhazdadjoke.com/"))
  .then((response => {
    // do something here with reponse.
  })
  .catch(e => {
    // do somethign with the error.
  });