Object.key()与for...in...
2017-02-12 01:00
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The Object.keys() method returns an array of a given object’s own enumerable properties, in the same order as that provided by a for…in loop (the difference being that a for-in loop enumerates properties in the prototype chain as well).
意思是说Object.key()返回一个数组不会遍历原型链上的键值，而for…in…会遍历原型链上的键值。
意思是说Object.key()返回一个数组不会遍历原型链上的键值，而for…in…会遍历原型链上的键值。
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