CoffeeScript is a little language that compiles into JavaScript. Think of it as JavaScript's less ostentatious kid brother — the same genes, roughly the same height, but a different sense of style. Apart from a handful of bonus goodies, statements in CoffeeScript correspond one-to-one with their equivalent in JavaScript, it's just another way of saying it.

Thư viện JS mã nguồn mở của BBC, hỗ trợ cả những trình duyệt cổ như IE 5.5 và Safari 1.3

Dự án port PHP sang JavaScript