Execution Context and Stack in JavaScript

useless-callback.js

const text = 'Hello text!';
console.log('Before defining functions');

const useless = (callback) => {
  console.log('In useless function');
  return callback();
}

const getText = () => {
  console.log('In getText function');
  return text;
}

console.log('Before making all the calls');

console.log(useless(getText) === text, `The useless function works! ${text}`);

console.log('After the calls have been made');