get instagram url

instagramurl.js

(
  function() {

    function getSrc() {
      var el = document.querySelector('div[role=dialog]');
      if (el == null) {
        el = document;
      }
      var media = el.querySelector('video');
      if (media == null) {
        media = el.querySelector('img[id]');
      }
      return media.src;
    }
    
    window.location = getSrc();

  }
)();