(setq result (dom-parent elem node))))
result)))
+(defun dom-previous-sibling (dom node)
+ (when-let (parent (dom-parent dom node))
+ (let ((siblings (dom-children parent))
+ (previous nil))
+ (while siblings
+ (when (eq (cadr siblings) node)
+ (setq previous (car siblings)))
+ (pop siblings))
+ previous)))
+
(defun dom-node (tag &optional attributes &rest children)
"Return a DOM node with TAG and ATTRIBUTES."
(if children