How to extract a json object that's inside a json object

Question

Convert this:

{\"items\":[{\"id\":\"BLE89-A0-123-384\",\"weight\":\"100\",\"quantity\":3},
          ...    
          {\"id\":\"BLE10-A0-123-321\",\"weight\":\"         


        

Answer 1

You can try with:

var obj = {
    "items":[
        {"id":"BLE89-A0-123-384","weight":"100","quantity":3},
        {"id":"BLE10-A0-123-321","weight":"100","quantity":4}
    ],
    "country":"JUS",
    "region":"A",
    "timeout":"FILLER"
};

var quantities = {};
obj.items.forEach(function (item) {
    quantities[item.id] = item.quantity;
});

quantities will then be the object {"BLE89-A0-123-384":3,"BLE10-A0-123-321":4}. forEach is a native method of array objects in JavaScript that lets you iterate through their elements. You may want to put that piece of code inside a function:

function getQuantities(obj) {
    var quantities = {};
    obj.items.forEach(function (item) {
        quantities[item.id] = item.quantity;
    });
    return quantities;
}