Appending to a JS object that is not an array?

Question

I have an object that looks something like this

{
  "_id": "DEADBEEF",
  "_rev": "2-FEEDME",
  "name": "Jimmy Strawson",
  "link": "placeholder.txt",
  "entries": {
    "Foo": 0
  }
}

Which is read into my javascript with a $.getJSON call.

So I have the JS object "reply" that holds all this data.

I need to append items such that "entries" becomes extended as follows:

{
  "_id": "DEADBEEF",
  "_rev": "2-FEEDME",
  "name": "Jimmy Strawson",
  "link": "placeholder.txt",
  "entries": {
    "Foo": 0,
    "Bar": 30,
    "Baz": 4
  }
}

I have tried

reply['entries'].push({"Bar": 0});

But that does not work (I presume because nothing is an array)

Can someone provide an alternative method?

Answer 1

reply['entries'].push({"Bar": 0}) does not work as entries is not of type Array but just a plain Object.

Use reply['entries']["Bar"] or reply.entries.Bar. See demo below:

var reply = {
  "_id": "DEADBEEF",
  "_rev": "2-FEEDME",
  "name": "Jimmy Strawson",
  "link": "placeholder.txt",
  "entries": {
    "Foo": 0,
    "Bar": 30,
    "Baz": 4
  }
}
reply['entries']["Bar"] = 0;

console.log(reply);