Humble bundle book bundles - download all books at once

hb_all_books_dl.js

/* 
After purchasing a humble book bundle, go to your download page for that bundle. 
Open a console window for the page and paste in the below javascript.
This will download all the books in all the formats available.
*/ 
$('a').each(function(i){
   if (['MOBI', 'PDF', 'EPUB'].indexOf($.trim($(this).text())) >= 0) {
      $('body').append('<iframe id="dl_iframe_'+i+'" style="display:none;">');
      document.getElementById('dl_iframe_'+i).src = $(this).data('web');
   }
});

As @deadphan says, it doesn't seem to work anymore.

So I used the JS-Code from @inicola to get all Links and downloaded using PowerShell:

$links = 'link1',
'lin2',
...

foreach($link in $links){
    $name =  $link.Split("?")[0].Split('/')[3]
    $path = ".\ebooksHumbleBundle\" + $name
    wget -Uri $link -OutFile $path


}

Or simply copy/paste the links from the console log to "list.txt" and use "wget -i files.txt" ...