Infinite image gallery core js

gallery.js

const container = document.querySelector('.gallery__container');
const prevButton = document.querySelector('.gallery__prev');
const nextButton = document.querySelector('.gallery__next');

prevButton.onclick = () => {
  const items = document.querySelectorAll('.gallery__item');
  container.insertBefore(items[items.length - 1], items[0]);
};

nextButton.onclick = () => {
  const items = document.querySelectorAll('.gallery__item');
  container.appendChild(items[0]);
};