Logs event listeners for a DOM element and its ancestors (Chrome only)

index.js

function logListenersForElement(element, eventType) {
  if (!element) return;

  const eventListeners = getEventListeners(element);
  
  if (Object.keys(eventListeners).indexOf(eventType) !== -1) {
    console.log({
      element,
      listeners: eventListeners[eventType],
    });
  }

  return logListenersForElement(element.parentNode, eventType);
}

// Usage:
// const el = document.getElementById('foo');
// logListenersForElement(el, 'click');