ted-downloader.bookmarklet.js

javascript:
  ([].forEach.call(document.scripts, function(el, p) {
    var code = el.innerHTML.trim();
    if ( (p = code.indexOf('q("talkPage.init",')) > -1 ) {
      var json = code.slice(p + 18, -1).trim();
      var talk = JSON.parse(json).talks[0];
      var url = talk.nativeDownloads.high || talk.nativeDownloads.medium;
      var a = document.createElement('a');
      a.href = url;
      a.download = url.match(/([^\/\?]+)(\?.+?)?$/)[1];
      a.style.display = 'none';
      document.body.appendChild(a);
      a.click();
      a.remove();
    }
  }))();
  void(0)