Get keys of object in order?

Question

Can we get keys of a JSON in the same order it was received?

Object.keys(company).length works, but I need confirmation if it will always work.

{
  "hello":"world",
  "welcome":"back",
  "1":"2"
}

How can we get keys in the same order?

["hello","welcome","1"]

From [here](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys): _The Object.keys() method returns an array of a given object's own property names, **in the same order** as we get with a normal loop_. — Shidersz, Jan 05 '19 at 21:39
There is no such global guarantee. Neither JS objects (per ECMAScript specs) nor JSON guarantees key order - insert or otherwise. JSON itself expresses your forbids/excludes ordering assumptions. — user2864740, Jan 05 '19 at 21:44
@Shirersz The flaw in that statement is the incorrect assumption that the “normal loop” has a guaranteed order of key iteration. — user2864740, Jan 05 '19 at 21:46
Possible duplicate of [Does ES6 introduce a well-defined order of enumeration for object properties?](https://stackoverflow.com/questions/30076219/does-es6-introduce-a-well-defined-order-of-enumeration-for-object-properties) — Peter B, Jan 05 '19 at 22:15

score 1 · Answer 1 · answered Jan 05 '19 at 21:42

1

You might be better off storing your data in a Map to ensure insertion order and entry retrieval.

answered Jan 05 '19 at 21:42

McRae Petrey

Still ‘excludes’ key ordering from JSON (or even objects creating said Maps) and parsing of such. – user2864740 Jan 05 '19 at 21:50
You can't serialize a map. This is not an answer to the question. – Patrick Roberts Jan 05 '19 at 21:51

1 Answers1