Get scrollbar width JavaScript

scrollbarwidth.js

// Easy immediately invoked function expression (IIFE) to find the current scrollbar width in browser
// Returns a number of scrollbar width in pixels
const scrollBarWidth = (() => {
  const a = document.createElement('div');
  document.body.appendChild(a).style.overflowY = 'scroll';
  const w = a.offsetWidth - a.clientWidth;
  a.remove();
  return w;
})();

console.log(scrollBarWidth);