How to retrieve JSON object elements with variables?

Question

Using $.getJSON, I've got a very large result which contains elements for each of our products. I need to access some of the properties using variables, but can't manage to figure out the jQuery syntax to do so.

$.getJSON("datasource.php",function(licensed){
    // Hardcoded works
    alert ( licensed.product5200.order_id );

    // How to use a variable instead, something like this:
    var MyVar = "product5200";
    alert ( licensed.MyVar.order_id );
});

EDIT: Is there a way to determine if "product5200" exist before I begin working with it?
console.info('Is It There?:' + licensed['product5200'].hasOwnProperty);

ANSWER: console.info('Is It There?:' + licensed.hasOwnProperty('product5200'));

JSON Object (shown as a PHP array for clarity only)

[licensed] => Array
    (
        [product5200] => Array
            (
                [product_id] => 5200
                [order_id] => 159004882
            )
        [product5204] => Array
            (
                [product_id] => 5204
                [order_id] => 159004882
            )

Explosion Pills · Accepted Answer · 2012-08-09 18:48:41Z

4

You can use array-access notation on objects as well.

licensed[MyVar].order_id

should work.

By the way, I would suggest console.log over alert, especially in Chrome (which lets you inspect the contents of the logged object).

answered Aug 9, 2012 at 18:48

Explosion Pills

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9 Comments

GDP Over a year ago

Ah...started down the path of Arrays to begin with, but as I learn this stuff, the googling gets me down a specifc path. BTW, I generally do use console - I use alert when I don't want to lose track of something I'm working on - it nags me until I finish it, lol

GDP Over a year ago

And thank you, btw....KevinB actually answered it first, so I have to accept his answer, but +1 for yours as a consolation! :)

Explosion Pills Over a year ago

@GDP it says I answered 8 minutes ago and he answered 9 minutes ago

user400654 Over a year ago

It doesn't really matter, the question was asked, and an answer was found. :)

Explosion Pills Over a year ago

@Steve oh yeah; I guess I forgot how to count

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