JS download image from url

download-image.js

  async function downloadImage(imageSrc, fName) {
    const image = await fetch(imageSrc)
    const imageBlog = await image.blob()
    const imageURL = URL.createObjectURL(imageBlog)
  
    const link = document.createElement('a')
    link.href = imageURL
    link.download = fName
    document.body.appendChild(link)
    link.click()
    document.body.removeChild(link)
  }
  var x = 100;
  var items = Array.from(document.querySelectorAll("a.item-image.b-lazy"));
  var iter = items.length;
  for (let index = 0; index < iter && index < 8; index++) {
      downloadImage(items[index].style.backgroundImage.slice(items[index].style.backgroundImage.indexOf('"') + 1, items[index].style.backgroundImage.lastIndexOf('"')), `${x+index}.webp`);
  }