js wait for the timeout\ code example

Example 1: javascript sleep

function sleep(milliseconds) {
  const date = Date.now();
  let currentDate = null;
  do {
    currentDate = Date.now();
  } while (currentDate - date < milliseconds);
}

console.log("Hello");
sleep(2000);
console.log("World!");

Example 2: sleep function js

function sleep(ms) {
   return new Promise(resolve => setTimeout(resolve, ms));
}