Get started with datejs CDN

// Include Date.js library from the CDN
const script = document.createElement('script');
script.src = 'https://cdn.cdnhub.io/datejs/1.0/date.min.js';
document.head.appendChild(script);

// Wait for the library to be loaded
window.onload = () => {
  // Create a new Date.js object from a string
  const dateString = '2022-03-15';
  const dateObj = new Date.Date(dateString);

  // Add some time to the date
  dateObj.add(Date.DAY, 5);

  // Output the new date
  console.log(dateObj.toString()); // "Wed Mar 22 2022 00:00:00 GMT+0100 (Central European Standard Time)"
};