For (var key in object) in CoffeeScript?

Question

How can I use for (var key in object) in CoffeeScript? It compiles for ...

for (_i = 0, _len = object.length; _i < _len; _i++) { key = object[_i]; 

... but I just want to iterate though the object.

Answer 1

for key of object

Try it in js2coffee

Answer 2

of keyword:

 for key, value of obj 

or make sure that you check the properties of this object (and not the prototype chain):

 for own key, value of obj