Get started with MutationObserver.js CDN

// Include the MutationObserver library from the CDN
const MutationObserver = window.MutationObserver || window.WebKitMutationObserver;

// Create a new observer instance
const observer = new MutationObserver((mutationsList, observer) => {
  // Your callback logic here
  const targetElement = document.querySelector('#target');
  if (targetElement) {
    console.log('Element modified:', targetElement.innerHTML);
  }
});

// Configuration of the observer
const config = { attributes: true, childList: false, subtree: false };

// Pass in the target node and configuration to the observer
observer.observe(document.body, config);

// Remove the observer when done
// observer.disconnect();