DOM Leaf Text Comparison

A document renderer processes two hierarchical DOM structures and checks whether they produce identical rendered text. Each node in the DOM either holds a non-empty text value (leaf node) or holds child nodes (container node). Container nodes carry no text themselves.

Extract all leaf texts from each DOM tree by traversing top-to-bottom in pre-order, then concatenate them. Return true if both trees produce the same concatenated string, false otherwise. ...