Sort an array alphabetically in javascript

Question

How to sort object by its value alphabetical order not by key? Here is object

{
1: "Arabic"
2: "Bulgarian"
3: "Catalan"
4: "Chinese"
5: "Croatian"
6: "Czech"
7: "Danish"
8: "Dutch"
9: "English"
10: "Estonian"
11: "Finnish"
12: "French"
13: "German"
14: "Greek"
15: "Hebrew"
16: "Hungarian"
17: "Icelandic"
18: "Indonesian"
19: "Italian"
20: "Japanese"
21: "Korean"
22: "Latvian"
23: "Lithuanian"
24: "Norwegian"
25: "Polish"
26: "Portuguese"
27: "Romanian"
28: "Russian"
29: "Serbian"
30: "Slovak"
31: "Slovenian"
32: "Spanish"
33: "Swedish"
34: "Turkish"
35: "Afrikaans"
}

and desired output by alphabetical order

{ 35: "Afrikaans" 1: "Arabic" 2: "Bulgarian" 3: "Catalan" 4: "Chinese" 5: "Croatian" 6: "Czech" 7: "Danish" 8: "Dutch" 9: "English" 10: "Estonian" 11: "Finnish" 12: "French" 13: "German" 14: "Greek" 15: "Hebrew" 16: "Hungarian" 17: "Icelandic" 18: "Indonesian" 19: "Italian" 20: "Japanese" 21: "Korean" 22: "Latvian" 23: "Lithuanian" 24: "Norwegian" 25: "Polish" 26: "Portuguese" 27: "Romanian" 28: "Russian" 29: "Serbian" 30: "Slovak" 31: "Slovenian" 32: "Spanish" 33: "Swedish" 34: "Turkish" }

There's no array here, just an object. What's the expected output? — Mureinik, Jul 01 '21 at 08:32
My expected output is {35: "Afrikaans",1: "Arabic" 2: "Bulgarian" 3: "Catalan" 4: "Chinese" 5: "Croatian" 6: "Czech" 7: "Danish" 8: "Dutch" 9: "English" 10: "Estonian" 11: "Finnish" 12: "French" 13: "German" 14: "Greek" 15: "Hebrew" 16: "Hungarian" 17: "Icelandic" 18: "Indonesian" 19: "Italian" 20: "Japanese" 21: "Korean" 22: "Latvian" 23: "Lithuanian" 24: "Norwegian" 25: "Polish" 26: "Portuguese" 27: "Romanian" 28: "Russian" 29: "Serbian" 30: "Slovak" 31: "Slovenian" 32: "Spanish" 33: "Swedish" 34: "Turkish"} — Ashish Rai, Jul 01 '21 at 08:33
You can't really sort object keys. Perhaps you meant to create an array? — Mureinik, Jul 01 '21 at 08:45

score 0 · Answer 1 · answered Jul 01 '21 at 08:39

0

welcome to stackOverflow, this question would be on Javascript section.

const obj = {1: "Arabic", ... }

For your question, if you need an Array sorted:

const sorted = Object.values(obj).sort();

If you need an object, with sorted array:

const newObj = {}
sorted.forEach((name, index) => newObj[index] = name)

answered Jul 01 '21 at 08:39

Adrián

175
9

2

You've just recreated the same object. You can't really sort object keys. That's what arrays are for – 83C10 Jul 01 '21 at 08:44
I created new object with sorted values. :/ – Adrián Jul 01 '21 at 08:47

Pylon · Answer 2 · 2021-07-01T09:06:54.377

Actually, it's an object instead of an array of your given input. We could not sort on an object but we could determine the iteration order over an object by overriding the Iterator interface as below:

const myObj = {
  1: "Arabic",
  2: "Bulgarian",
  3: "Catalan",
  4: "Chinese",
  5: "Croatian",
  6: "Czech",
  7: "Danish",
  8: "Dutch",
  9: "English",
  10: "Estonian",
  11: "Finnish",
  12: "French",
  13: "German",
  14: "Greek",
  15: "Hebrew",
  16: "Hungarian",
  17: "Icelandic",
  18: "Indonesian",
  19: "Italian",
  20: "Japanese",
  21: "Korean",
  22: "Latvian",
  23: "Lithuanian",
  24: "Norwegian",
  25: "Polish",
  26: "Portuguese",
  27: "Romanian",
  28: "Russian",
  29: "Serbian",
  30: "Slovak",
  31: "Slovenian",
  32: "Spanish",
  33: "Swedish",
  34: "Turkish",
  35: "Afrikaans",
};

myObj[Symbol.iterator] = function* () {
  const entries = Object.entries(this).sort((a, b) => a[1].localeCompare(b[1]));

  for (const [key, value] of entries) {
    // you could determine what structure looks like here
    yield { [key]: value };
  }
};

for (const x of myObj) {
  console.log(x);
}

Sort an array alphabetically in javascript

2 Answers2