I've reviewed the developer and help site documentation and they say the exact same thing:

Encodes text and merge field values for use in JavaScript by inserting escape characters, such as a backslash (\), before unsafe JavaScript characters, such as the apostrophe (').

That's great, but I'd like to know which specific characters JSENCODE and JSINHTMLENCODE handle.

If that's not clear, I want a detailed list.
 

I've reviewed the developer and help site documentation and they say the exact same thing:

Encodes text and merge field values for use in JavaScript by inserting escape characters, such as a backslash (\), before unsafe JavaScript characters, such as the apostrophe (').

That's great, but I'd like to know which specific characters JSENCODE and JSINHTMLENCODE handle.

If that's not clear, I want a detailed list.