code: function detach($move_children_up = false) {
  		if (($p = $this->parent) !== null) {
  			$index = $this->index();
  			$this->parent = null;
  
  			if ($move_children_up) {
  				$this->moveChildren($p, $index);
  			}
  			$p->deleteChild($this, true);
  		}
  	}
docs: Detach node from parent
  @param bool $move_children_up Only detach current node and replace it with child nodes
  @internal jquery (naming) compatibility
  @see delete()