set-document-cookie.html

Enable keyboard shortcuts

<!DOCTYPE html>

<meta charset="utf-8">

<body>

  <script>

    'use strict';

    let query = window.location.search;

    let cookieString = '';

    if (query && query.length > 1)

      cookieString = decodeURIComponent(query.slice(1));

    document.cookie = cookieString;

    window.opener.postMessage('set-document-cookie-complete', '*');

    window.close();

  </script>

</body>