为(对象中的 var 键)在 CoffeeScript?

如何在 CoffeeScript 中使用 for (var key in object) 。

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

但是我只想迭代一个对象。

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of keyword:

for key, value of obj

or to make sure you're only checking properties on this object (and not the prototype chain):

for own key, value of obj

for key of object

Try it in js2coffee