'Joisey' is pretty much gone with the wind. People here use it purposely to get a laugh when asked where they're from. Actually it is a New York City accent that uses 'Joisey' more than we from the other side of the Hudson do. But the Jersey accent is strong of itself and sometimes hard to distinguish from New York City's. In fact, the accents there differ by borough or even neighborhood. And here in Jersey, one's accent will differ depending on what part of the state one is from.

Clifton53