Multi-dimensional associative array with named index

Question

Spent quite some time and googled but I can't seem to achieve this in Javascript:

PHP:

$items['01A']['price'] = "$30";
$items['01A']['description'] = "Description1";

$items['02B']['price'] = "$60";
$items['02B']['description'] = "Description2";

Output:

Array
(
    [01A] => Array
        (
            [price] => $30
            [description] => Description1
        )

    [02B] => Array
        (
            [price] => $60
            [description] => Description2
        )

)

Well, I can, like so:

var obj = {
    '0113A5' : {
        'price' : '1200',
        'discount' : '5'
    },
    '0213A5' : {
        'price' : '1800',
        'discount' : '0'
    }
};

... but assigning values inside a look isn't possible because this:

obj['0313A5']['price'] = "2000";
//or
obj.0313A5.price = "2000";

... throws an error.

obj['0313A5']['price'] = "2000"; is perfectly valid... what's the error you see? — gp.
– gp., Commented Jan 18, 2015 at 12:26

Oleksandr T. · Accepted Answer · 2015-01-18 12:32:52Z

1

You need create empty object before assign properties to it, like this

var obj = {};

obj['0113A5'] = {};
obj['0113A5'].price = '1200';
obj['0113A5'].discount = '5';


obj['0213A5'] = {};
obj['0213A5'].price = '1800';
obj['0213A5'].discount = '0';

Example

edited Jan 18, 2015 at 12:32

answered Jan 18, 2015 at 12:26

Oleksandr T.

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Comments

Bandon · Accepted Answer · 2015-01-18 12:31:38Z

0

var obj = {
            '0113A5' : {
                'price' : '1200',
                'discount' : '5'
            },
            '0213A5' : {
                'price' : '1800',
                'discount' : '0'
            }
        };

obj['0113A5']['discount'] = '222';
alert(obj['0113A5']['discount']);

obj['0113A5'].discount = '333';
alert(obj['0113A5']['discount']);

It is valid.

http://jsfiddle.net/9jq5esg2/

answered Jan 18, 2015 at 12:31

Bandon

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