Javascript runs in a Web browser or you could install node abd use that to run it like a script.
You might wanna grab a book or udemy beginners course and systematicaly work though it. Also if you find a good programmer discord they'll help you if something from it is unclear...
You might wanna grab a book or udemy beginners course and systematicaly work though it. Also if you find a good programmer discord they'll help you if something from it is unclear...