accessing array in a nested data structure containing objects and arrays with unknown property names

Question

I have the following nested object with objects and arrays :

'ecommerce': {
  '[dynamicvalue]': {
    'actionField': {'step': 4},
    'products': [{
        'name': 'Spirit Pack',  
        'id': '12345',
        'price': '55',
   }]
 }

I'd like to extract the product array however I don't know the second property name, it's a dynamic value changing all the time.

Normally I should be able to do something like this var x = ecommerce.[dynamicvalue].products

However since I never know this second value how can I do?

score 1 · Accepted Answer · answered Apr 13 '19 at 00:18

1

Access the Object.values of ecommerce to get an array of every subobject (thereby skipping the "dynamicvalue"), and then you can do what you need to with that subobject's products:

const obj = {
  'ecommerce': {
    '[dynamicvalue]': {
      'actionField': {
        'step': 4
      },
      'products': [{
        'name': 'Spirit Pack',
        'id': '12345',
        'price': '55',
      }]
    }
  }
};

const [{ products }] = Object.values(obj.ecommerce);
console.log(products);

answered Apr 13 '19 at 00:18

CertainPerformance

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Do you have an alternative without using const? – Simon Breton Apr 13 '19 at 00:22
Feel free to use `let` or `var` instead, but `const` should really be preferred when possible - it makes code easier to reason about when you *know* a variable isn't going to be reassigned. – CertainPerformance Apr 13 '19 at 00:23

accessing array in a nested data structure containing objects and arrays with unknown property names

1 Answers1