Why CoffeeScript?
CoffeeScript was certainly not the first (or last) language to target JavaScript platforms. Many established languages, such as Ruby, Python, C, and Java have one or more projects focused on compiling that language to JavaScript. And other languages have been developed specifically to target JavaScript—notably Dart, TypeScript, and Coco.
Note
The CoffeeScript wiki itself maintains an extensive list of other languages that compile to JavaScript. You can find it at https://github.com/jashkenas/coffee-script/wiki/List-of-languages-that-compile-to-JS.
While it's not alone in its approach, CoffeeScript has seen the most success of any language that compiles to JavaScript. It is the tenth most popular language on GitHub, it ships by default ...
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