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. 30. The computing device of claim 25 , wherein the processor is configured with processor-executable instructions to perform operations further comprising: completing HTML code computations for the generated DOM tree when it is determined that the generated DOM tree is not isomorphic with any of the one or more portions of the particular stored DOM tree; and storing the results of the HTML computations indexed with the generated DOM tree in the memory.