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jashkenas--coffeescript/documentation/sections/classes.md
Geoffrey Booth d1d2c16fdd Update docs for classes, breaking changes (#4438) 
* Update classes docs for CS2

* Port breaking changes from https://github.com/jashkenas/coffeescript/wiki/%5BWIP%5D-Breaking-changes-in-CoffeeScript-2 into new docs section

* Update browser compiler

* Update re @connec’s notes; split classes section into two sections for classes and working with prototypes; make breaking changes examples editable whenever possible
2017-02-09 08:50:11 -08:00

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Classes

CoffeeScript 1 provided the class and extends keywords as syntactic sugar for working with prototypal functions. With ES2015, JavaScript has adopted those keywords; so CoffeeScript 2 compiles its class and extends keywords to ES2015 classes.

codeFor('classes', true)

Static methods can be defined using @ before the method name:

codeFor('static', 'Teenager.say("Are we there yet?")')

Finally, class definitions are blocks of executable code, which make for interesting metaprogramming possibilities. In the context of a class definition, this is the class object itself; therefore, you can assign static properties by using @property: value.