On Sunday, 11 December 2016 at 18:30:53 UTC, Erdem wrote:
element.parentNode = null;
content.appendChild(element);
That works too, but could lead to data corruption later because the other document thinks it still owns the element, but the element doesn't know that. So if you descend through children of either ones, you'll see it, but then if you go back up through the parents, you won't end up back where you started.
