How to parse json object with collection

How to parse json object with collection

Hi!

I need to parse the following json:

{
    "customerId": 0,
    "customer": null,
    "cultureId": 0,
    "culture": null,
    "entrys": [],
    "id": 0,
    "uId": "26a8dabd-30b1-4a54-8781-70f209c8dbca",
    "dateCreated": "2017-08-12T17:11:28.9080481+02:00"
}


this is what I have so far:
  1. var obj = JSON.parse(data);

but how can I access the number of items (count) in the " entrys" collection?