Thank you for let me know that! Indeed it's my first time to make a game from scratch and upload it on itch.io. At first, i tried to upload the html files, but it can't be opened and played on website. So i finally upload the exe files successfully.
In the Edit Games page, after you upload the zip file (needs to be called index.html inside the zip), you can then check “This file will be played in the browser”.
