All you need is a local web server. You can use something likeI would be glad if someone could help me with this
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(I suggest the portable version for the easiest setup). Use it to create a new server, you don't need to change any settings. Set the folder path to the same folder as the game (the folder with index.html in it). Click on the server in the list then click on the URL for the server and it should automatically open the game. Remember to close the server when you're done.