for CoffeeScript中的(var key in object)？

Question

我如何在CoffeeScript中使用for(var key in object)？它编译成......

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

...但我只想迭代一个对象.

Answer 1

for key of object

在js2coffee中尝试一下

Answer 2

of 关键词:

for key, value of obj

或者确保您只检查此对象的属性(而不是原型链):

for own key, value of obj