Simple smooth scroll with pure JavaScript

scroll-to.js

// To element
const scrollTo = (selectors) => {
  document
    .querySelector(selectors)
    .scrollIntoView({ behavior: 'smooth' });
};

// To top
const scrollToTop = () => {
  window.scroll({
    top: 0,
    behavior: 'smooth',
  });
};

// To bottom
const scrollToBottom = () => {
  window.scroll({
    top: document.documentElement.clientHeight,
    behavior: 'smooth',
  });
};