<pre class="shiki github-dark shaku"><code>/** * @param {HTMLElement} rootA * @param {HTMLElement} rootB - rootA and rootB are clone of each other * @param {HTMLElement} nodeA */const findCorrespondingNode = (rootA, rootB, target) =&gt; { let pointer = target; const path = []; while(pointer != rootA) { let position = [...pointer.parentElement.childNodes].indexOf(pointer); path.push(position); pointer = pointer.parentElement } pointer = rootB; while(path.length &gt; 0){ let position = path.pop(); pointer = [...pointer.childNodes][position] } return pointer;}</code></pre>