function createAndAppendElement(parentId, tagName, textContent, attributes = {}) {
  const parentElement = document.getElementById(parentId);
  if (!parentElement) {
    console.error(`Parent element with ID '${parentId}' not found.`);
    return null;
  }

  const newElement = document.createElement(tagName);
  newElement.textContent = textContent;

  for (const key in attributes) {
    if (attributes.hasOwnProperty(key)) {
      newElement.setAttribute(key, attributes[key]);
    }
  }

  parentElement.appendChild(newElement);
  return newElement;
}

// Example usage:
// <div id="container"></div>
const listItem = createAndAppendElement('container', 'li', 'New List Item', { 'data-id': 'item-1', class: 'my-item' });
if (listItem) {
  console.log('Element created and appended:', listItem);
}