Agreed, just in a rush to comment before. I'd go one further and say using an Array that way is just plain worrisome in JavaScript. It just breaks the concept

Agreed, just in a rush to comment before. I'd go one further and say using an Array that way is just plain worrisome in JavaScript. It just breaks the conceptual usage "sort of" of Array vs Object (for/while vs for each...in). That's why a lot of frameworks add an "each" iterator for Array/Hashes (Hashes being a "controlled" Object added by most frameworks).