Get the URL of the typeform page to results

You can create a url_form hidden field in your form, and then pass the URL of the page when loading the form dynamically.

<div id="tf"></div>
<link rel="stylesheet" href="//embed.typeform.com/next/css/widget.css" />
<script src="//embed.typeform.com/next/embed.js"></script>
<script>
  window.tf.createWidget('<form-id>', {
    container: document.getElementById('tf'),
    hidden: { url_form: window.location.href }
  });
</script>

Cześć @maksrybicki 

this is possible only by using the Typeform Embed SDK directly, not via snippet from the share page (the code you shared).

You can use a code like this to embed your typeform as slider:

<a href="#" id="tf">Aplikuj</a>
<link rel="stylesheet" href="//embed.typeform.com/next/css/slider.css" />
<script src="//embed.typeform.com/next/embed.js"></script>
<script>
  document.querySelector('#tf').onclick = (event) => {
    event.preventDefault()
    window.tf.createSlider('fhRL6nmN', {
      hidden: { url_form: window.location.href }
    }).open()
  }
</script>

Hope this helps.