Сергей Соколов

const arr = Array.from(
  new Set(Array.from(document.querySelectorAll('.shop_name'), n => n.innerText)),
  n => ({ name: n })
);

const arr = Object.values(Array.prototype.reduce.call(
  document.getElementsByClassName('shop_name'),
  (acc, { textContent: name }) => (acc[name] ??= { name }, acc),
  {}
));

const query = new URLSearchParams(window.location.search);
const {lpkay1, lpkay2} = Object.fromEntires(query.entries());

console.log(
  `       *
      * *   
     *   *  
    ******* 
   *       *
  *         *`);

function shortNumber(val) {
  const abs = Math.abs(val);
  const prefixIndex = Math.log10(abs) / 3 | 0;
  return (
    (val < 0 ? '-' : '') +
    Math.round(abs / (10 ** (prefixIndex * 3))) +
    'KMGTPEZY'.charAt(~-prefixIndex)
  );
}

shortNumber(99)       // '99'
shortNumber(1945)     // '2K'
shortNumber(-5839465) // '-6M'
shortNumber(7e10)     // '70G'

[].toString() + true + false - null
"" + true // "true"
"" + true + false // "truefalse"
"" + true + false - null // NaN

true + false - null + [].toString()
1 + 0 // 1
1 + 0 - 0 // 1
1 + 0 - 0 + "" // "1"

Определить что скачивание файла закончилось?

document.querySelectorAll('.slider__itm img').forEach(n => {
  const link = document.createElement('a');
  n.parentNode.append(link);
  link.append(n);
});

for (const n of document.querySelectorAll('.slider__itm')) {
  n.innerHTML = `<a>${n.innerHTML}</a>`;
}

for (const n of document.getElementsByClassName('slider__itm')) {
  const link = document.createElement('a');
  link.appendChild(n.replaceChild(link, n.children[0]));
}

const imgs = document.querySelectorAll('.slider__itm img');

for (let i = 0; i < imgs.length; i++) {
  const link = document.createElement('a');
  imgs[i].replaceWith(link);
  link.insertAdjacentElement('afterbegin', imgs[i]);
}