Sorting values in an object [duplicate]

Question

Possible Duplicate:
Sorting a JSON object in Javascript

I have an object with key and value pair.

var obj = {
   'key1':'z',
   'key2':'u',
   'key3':'a',
   'key4':'c',
   'key5':'b',
   'key6':'e'
}

I have to sort my values in alphabetical order like this, but look at the keys they have also changed accordingly.

    var obj = {
           'key3':'a',
           'key5':'b',
           'key4':'c',
           'key6':'e',
           'key2':'u',
           'key1':'z'
   }

Not all browsers let you specify the order of keys of objects. — Linus Kleen
– Linus Kleen, Commented Feb 7, 2012 at 8:28

Ateş Göral · Accepted Answer · 2012-02-07 08:27:59Z

1

You cannot sort object properties. Object properties behave like a hash map where the iteration order of properties may not reflect the order in your source code or JSON payload.

You should look into storing your data as an Array:

var arr = [{
   key: "key1", value: "z"
}, {
   key: "key2", value: "u"
}, {
   ...
}];

var sorted = arr.sort(function (a, b) {
    return a.key === b.key ? 0
        : a.key < b.key ? -1 : 1;
});

answered Feb 7, 2012 at 8:27

Ateş Göral

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