Javascript push to elements in a multidimensional array

Question

I need to produce an array formatted as :

products : 
[
    {
        "product_id": 32,
        "quantity": 2
    },
    {
        "product_id": 33,
        "quantity": 2,
        "product_options": 
        [
            {
                "id": 87,
                "value": 10
            }
        ]
    }
]

I can do the product_id & quantity ok using :

productID = 32;
prodQuantity = 2;
var row2 = {};
row2.product_id = productID;
row2.quantity = prodQuantity;
product.push(row2);

productID = 33;
prodQuantity = 2;
var row2 = {};
row2.product_id = productID;
row2.quantity = prodQuantity;
product.push(row2);

How do I add the element product_options with the id & value.

I have tried variations of:

var row3 = {};
row3.id = 87;
row3.value = 10;    
cartArray['product_options'].push(row3);

I managed it using:

var prodQuantity = app.getValue('popupDropdown').value;
var cartArray = [];
var optionID = app.getValue('popupDropdown4').value;
var row2 = {};
var row3 = {};
var row4 = {};
var tempArray = [];
row2.product_id = productID;
row2.quantity = prodQuantity;
cartArray.push(row2);
row3.id = optionID;
row3.value = Rule4Value;
tempArray.push(row3);
row4.product_options = tempArray;
cartArray.push(row4);

But I see the answer below is much simpler.

No mention that the OP is using jQuery.

Lee Taylor
– Lee Taylor

2014-04-15 23:24:56 +00:00
Commented Apr 15, 2014 at 23:24 — Lee Taylor
– Lee Taylor, Commented Apr 15, 2014 at 23:24

SimpleJ · Accepted Answer · 2014-04-15 23:26:05Z

5

You can set the product_options of row2 like this:

row2.product_options = [
    {
        id: 87,
        value: 10
    }
];

To explain:

product_options is a key in row2. It's value is an array with a single element that is an object with the keys id and value.

answered Apr 15, 2014 at 23:26

SimpleJ

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