Function findPostId

scripts/insta_injectDownloadBtn.js:718–728

(articleNode)

        }

        function findPostId(articleNode) {
          let aNodes = articleNode.querySelectorAll("a");
          for (let i = 0; i < aNodes.length; ++i) {
            let link = aNodes[i].getAttribute("href");
            if (link) {
              let match = link.match(postIdPattern);
              if (match) return match[1];
            }
          }
          return null;
        }

        async function fetchVideoURL(articleNode, videoElem) {
          let poster = videoElem.getAttribute("poster");