Merge pull request #279 from odsantos/update-en-object-keys-values-entries

Update "Object.keys, values, entries" English article

Author: odsantos

1-js/05-data-types/09-keys-values-entries/article.md

@@ -1,11 +1,11 @@
 
 # Object.keys, values, entries
 
-Let's step away from the individual 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()`.
 
-These methods are generic, there is a common agreement to use them for data structures. If we ever create a data structure of our own, we should implement them too. 
+These methods are generic, there is a common agreement to use them for data structures. If we ever create a data structure of our own, we should implement them too.
 
 They are supported for:
 
@@ -23,7 +23,7 @@ For plain objects, the following methods are available:
 - [Object.values(obj)](mdn:js/Object/values) -- returns an array of values.
 - [Object.entries(obj)](mdn:js/Object/entries) -- returns an array of `[key, value]` pairs.
 
-...But please note the distinctions (compared to map for example):
+Please note the distinctions (compared to map for example):
 
 |             | Map              | Object       |
 |-------------|------------------|--------------|
@@ -32,7 +32,7 @@ For plain objects, the following methods are available:
 
 The first difference is that we have to call `Object.keys(obj)`, and not `obj.keys()`.
 
-Why so? The main reason is flexibility. Remember, objects are a base of all complex structures in JavaScript. So we may have an object of our own like `order` that implements its own `order.values()` method. And we still can call `Object.values(order)` on it.
+Why so? The main reason is flexibility. Remember, objects are a base of all complex structures in JavaScript. So we may have an object of our own like `data` that implements its own `data.values()` method. And we still can call `Object.values(data)` on it.
 
 The second difference is that `Object.*` methods return "real" array objects, not just an iterable. That's mainly for historical reasons.