JS Iterate Object


```typefor (const key in object)```
는 가능한데 of 불가

> [How to get the index of an iteration in a for-of loop in JavaScript](https://flaviocopes.com/how-to-get-index-in-for-of-loop/)

> [자바스크립트 Array forEach](https://yuddomack.tistory.com/entry/%EC%9E%90%EB%B0%94%EC%8A%A4%ED%81%AC%EB%A6%BD%ED%8A%B8-Array-forEach)







