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Fix typo and formatting

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Wyatt Pearsall 2017-06-08 09:42:22 -07:00 • committed by GitHub
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1-js/05-data-types/08-keys-values-entries/article.md
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# Object.keys, values, entries # Object.keys, values, entries
Let's step away from the indivitual data structures and talk about the iterations over them. Let's step away from the individual data structures and talk about the iterations over them.
In the previous chapter we saw methods `map.keys()`, `map.values()`, `map.entries()`. In the previous chapter we saw methods `map.keys()`, `map.values()`, `map.entries()`.
@ -63,8 +63,9 @@ for(let value of Object.values(user)) {
} }
``` ```
```smart header="`Object.keys/values/entries` ignore symbolic properties" ## Object.keys/values/entries ignore symbolic properties
Just like `for..in` loop, these methods ignore properties that use `Symbol(...)` as keys.
Just like a `for..in` loop, these methods ignore properties that use `Symbol(...)` as keys.
Usually that's convenient. But if we want symbolic keys too, then there's a separate method [Object.getOwnPropertySymbols](mdn:js/Object/getOwnPropertySymbols) that returns an array of only symbolic keys. Also, the method [Reflect.ownKeys(obj)](mdn:js/Reflect/ownKeys) returns *all* keys. Usually that's convenient. But if we want symbolic keys too, then there's a separate method [Object.getOwnPropertySymbols](mdn:js/Object/getOwnPropertySymbols) that returns an array of only symbolic keys. Also, the method [Reflect.ownKeys(obj)](mdn:js/Reflect/ownKeys) returns *all* keys.
``` ```