Cannot serialize javascript array

Question

I have an associative array which looks something like this (not actual code):

sort_order['14682007'][0] = "1"
sort_order['14682007'][1] = "0"
sort_order['82501220'][0] = "2"
sort_order['82501220'][1] = "1"
sort_order['82501220'][2] = "0"

I'd like to serialize this array this way:

sort_order = JSON.stringify(sort_order);

But it returns only an empty string. Colud some one help me?

How did you create `sort_order`? How did you create the individual entries in `sort_order`? — T.J. Crowder, Dec 10 '13 at 07:33
Are you sure `sort_order` is constructed properly? Look at `console.log(sort_order)`. BTW, don't use the same variable for the input and output, it's confusing. — Barmar, Dec 10 '13 at 07:34
Without knowing what `sort_order` is exactly, we can only guess, which is likely wasting our time and not helpful to you. — Felix Kling, Dec 10 '13 at 07:51
Duplicate of [JavaScript associative array to JSON](http://stackoverflow.com/q/4425289/218196) maybe? — Felix Kling, Dec 10 '13 at 07:54

paperstreet7 · Accepted Answer · 2013-12-10T07:46:17.133

3

Make sure you declare your variables properly, an example:

    var sort_order = {};
    sort_order['82501220'] = [];
    sort_order['14682007'] = [];
    sort_order['14682007'][0] = "1";
    sort_order['14682007'][1] = "0";
    sort_order['82501220'][0] = "2";
    sort_order['82501220'][1] = "1";
    sort_order['82501220'][2] = "0";

    console.log(JSON.stringify(sort_order));

Note: If you declare sort_order as an array in this case you will have a very long sparse array I think.

edited Dec 10 '13 at 07:46

answered Dec 10 '13 at 07:36

paperstreet7

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I totally agree with this answer. I just recreated this example with `sort_order = [];`. At last when I did `JSON.stringify(sort_order);` the browser memory increases and crashes since it is a very huge sparse array. +1 for the brilliant (and very important) input – Ashwin Dec 10 '13 at 07:52

Cannot serialize javascript array

1 Answers1