Please forgive me, I'm new at this and old, so the going is slow.
1. If you place multiple functions in .js file, can a functions overwrite or negate other functions? If so, is there special designation that need to be placed in .js file. I'm having trouble with functions not working on the webpage like buttons not working correctly after adding a another function. (I'm not on a live webpage - just learning)
2. Are js files exclusively for functions? Can other things be placed in a .js file besides code that start with function because I've tried other things like example below and co