Iterate through nested json object array

Since myJSONObject.abc contains a list of products it would make more sense to define the property abc as an array. Like this:

var myJSONObject = 
{
"abc":
    [
        [
            {"prod_ver" : "prod 1 ver 1"},
            {"prod_ver" : "prod 1 ver 2"},
        ],
        [
            {"prod_ver" : "prod 2 ver 1"},
            {"prod_ver" : "prod 2 ver 2"},
        ],
        [
            {"prod_ver" : "prod 3 ver 1"},
            {"prod_ver" : "prod 3 ver 2"},
        ]
    ]
};

Then you can iterate over the products and their versions using normal loops:

for(var i = 0; i < myJSONObject.abc.length; i++)
{
    var product = myJSONObject.abc[i];
    for(var j = 0; j < product.length; j++)
    {
        var version = product[j];
    }
}

You could take it slightly further and alter your JSON object’s structure a bit to make it more easily understandable.

var catalog = 
{
    "products": [
        {
            "name": "prod 1",
            "versions": [
                "ver 1",
                "ver 2"
            ]
        },
        {
            "name": "prod 2",
            "versions": [
                "ver 1",
                "ver 2"
            ]
        }
    ]
};

for(var i = 0; i < catalog.products.length; i++)
{
    var product = catalog.products[i];
    var productName = product.name;
    for(var j = 0; j < product.versions.length; j++)
    {
        var version = product.versions[j];
    }
}