25. The computing device of claim 24 , wherein the processor is configured with processor-executable instructions such that determining whether a portion of the generated DOM tree is isomorphic with one or more portions of a particular stored DOM tree from a plurality of stored DOM trees comprises comparing the generated DOM tree with DOM tree structures of the particular stored DOM tree using a tree isomorphism comparison algorithm.
25. The computing device of claim 24 , wherein the processor is configured with processor-executable instructions such that determining whether a portion of the generated DOM tree is isomorphic with one or more portions of a particular stored DOM tree from a plurality of stored DOM trees comprises comparing the generated DOM tree with DOM tree structures of the particular stored DOM tree using a tree isomorphism comparison algorithm. 27. The computing device of claim 25 , wherein the processor is configured with processor-executable instructions such that determining whether a portion of generated DOM tree is isomorphic with one or more portions of a particular stored DOM tree from a plurality of stored DOM trees comprises determining whether the portion of the generated DOM tree is structurally similar to one or more portions of the particular stored DOM tree.