Sort a JSON array object using Javascript by value

Question

I have a JSON array and I am trying to sort it by value. The problem I am having is that I am not able to keep the JSON structure with my sorting.

Here is the JSON array:

{
  caffeineoverdose: '2517',
  workhardplayhard: '761277',
  familia: '4633452'
}

I would like something like this:

{
  familia: '4633452',
  workhardplayhard: '761277',
  caffeineoverdose: '2517
}

Either you have a string in JSON format, an array, or most likely a regular javascript object? Which one is it ? — adeneo, Jan 07 '14 at 16:55
you can't sort an object... but you can create a function and put that values into an array .. then sort. — cocco, Jan 07 '14 at 16:56
First off, there is no such thing as a "JSON array". JSON is a string representation of data (like XML or CSV). If it's not a string, it's not JSON. Second, this would be a JavaScript object (not an array). Objects can *not* be sorted in JavaScript, only arrays can. You want your data to be in an array, such as: `[{familia: '4633452'}, {...}]`. then you can sort it. — gen_Eric, Jan 07 '14 at 16:57
Those are JavaScript object literals, the syntax is invalid for JSON. — Quentin, Jan 07 '14 at 16:57

cocco · Accepted Answer · 2014-01-07T17:16:34.457

25

Here is everything you need.

Like i said already in the comments you can't sort an object.. but you can put it into an array and display the results.

var array=[],obj={
 caffeineoverdose:'2517',
 workhardplayhard:'761277',
 familia:'4633452'
};
for(a in obj){
 array.push([a,obj[a]])
}
array.sort(function(a,b){return a[1] - b[1]});
array.reverse();

DEMO

http://jsfiddle.net/GB23m/1/

edited Jan 07 '14 at 17:16

answered Jan 07 '14 at 17:02

cocco

16,442
7
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77

5

Instead of using `array.reverse()`, you can just change the sort function to `b[1] - a[1]`. – gen_Eric Jan 07 '14 at 17:40
Not worked for me. Thanks – Kamlesh Aug 13 '23 at 12:58

score 18 · Answer 2 · edited Aug 21 '18 at 10:32

18

You could convert it into an array of objects:

[{ name: 'caffeineoverdose', number: '2517' }, {name: 'workhardplayhard', number: '761277'}, {name: 'familia', number: '4633452'}]

and then sort by number

array.sort(function(a,b){
    return a.number - b.number;
    }
);

edited Aug 21 '18 at 10:32

MeVimalkumar

3,192
2
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26

answered Jan 07 '14 at 17:03

cejast

957
8
18

1

doesnt work with json array of {string:string} – Mr_Hmp Jul 01 '19 at 11:34
@Mr_Hmp change the function to: ***array.sort(function(a, b){ return a.name > b.name ? 0 : 1; })*** – Abhijit Kumar Feb 17 '23 at 13:19
getting error undefined sort function. not worked for me. – Kamlesh Aug 13 '23 at 12:59

score 6 · Answer 3 · answered Jan 07 '14 at 16:57

6

That's not JSON, and it's not an array. It's a regular JavaScript object, and you cannot impose an ordering on the properties of an object.

If you want to maintain the order of your elements, you need an array (again, this isn't JSON, it is JavaScript):

[ [ 'familia', '4633452'] ,
  [ 'workhardplayhard', '761277'],
  [ 'caffeineoverdose', '2517']
]

answered Jan 07 '14 at 16:57

user229044

232,980
40
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338

1

To add, you can WRITE the object sorted, and you can have it displayed on screen sorted, but once it's defined as an object you lose the order. See http://stackoverflow.com/questions/5525795/does-javascript-guarantee-object-property-order – brandonscript Jan 07 '14 at 16:59

Sort a JSON array object using Javascript by value

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