There are copies of the book on eBay, so it is available if you want a better copy to work from yourself. A quick search finds copies on archive.org too, though you might have to check a few to find a good one (the one I just opened wasn't a very clear scan, the code was not particularly easy to read due to being a low-res scan of already low-quality text).

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EDIT: having looked at the repository, it is reimplementing the games from that book in various languages, including javascript hosted in a web page, so for a direct translation it is exactly what you are looking for. If you want the multi-player ones to be playable between remote players, you still have some work to do!