Get numerical filenames of pictures in Dropbox gallery (thumbnails view)

dropbox-thumbs-names.js

var thumbs = document.querySelectorAll("#gallery-view-media a[onclick^=Lightbox]");
var ids = [];
for (var i = 0; i < thumbs.length; ++i)
{
  var item = thumbs[i];
  var fname = item.href.split('/').pop();
  var id = fname.match(/^\d+/)[0];
  ids.push(id);
}

console.log(ids);

var txt = document.createElement('textarea');
document.body.insertBefore(txt, document.body.childNodes[0]);
txt.value = ids.join("\n");
txt.setAttribute("style","position: absolute; top:0; z-index: 999; height: 10em;");