Parsing a array from a JSON file

Question

I am trying to parse JSON with JS, there is a array and is not working as intended. I have other API's in my program that i have parced. Here is the data

{
  "cases": {
    "6/5/20": 6774904,
    "6/6/20": 6901877,
    "6/7/20": 7015312,
    "6/8/20": 7119002,
    "6/9/20": 7236054
  },
  "deaths": {
    "6/5/20": 396204,
    "6/6/20": 400051,
    "6/7/20": 402792,
    "6/8/20": 406543,
    "6/9/20": 411436
  },
  "recovered": {
    "6/5/20": 2961441,
    "6/6/20": 3032630,
    "6/7/20": 3087135,
    "6/8/20": 3238065,
    "6/9/20": 3319551
  }
}

The code that I am using for this is here.

    const response = await fetch("https://disease.sh/v2/historical/all?lastdays=5");
    const data = await response.json();
    var casesH = data.cases[0];

    msg.channel.send(casesH);
    console.log(casesH);

Does anyone know what I could be doing wrong or what to do?

Thanks

youre trying to access your data as if it was an array. Its not, its an object so you have to access it by key. `data.cases["6/5/20"]` — Craicerjack, Jun 10 '20 at 23:45
There are no arrays in your question, only objects. Perhaps you want [`Object.values()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_objects/Object/values) if you don't know or care about the keys — Phil, Jun 10 '20 at 23:45

score -1 · Answer 1 · answered Jun 10 '20 at 23:47

Simple. That isn't an array, it's an object with three properties: cases, deaths, and recovered. Each of those properties is itself an object. To get cases, you instead want to index like so:

const data = await fetch(`url`).then(res => res.json());

const cases = data['cases'];

Alternatively, you should be able to use ES6 destructuring:

const { cases, deaths, recovered } = await fetch(`url`).then(res => res.json());

score -2 · Answer 2 · edited Jun 10 '20 at 23:44

-2

JSON is not an array, should be

{
"cases": [
    "6/5/20": 6774904,
    "6/6/20": 6901877,
    "6/7/20": 7015312,
    "6/8/20": 7119002,
    "6/9/20": 7236054
  ],
  "deaths": [
    "6/5/20": 396204,
    "6/6/20": 400051,
    "6/7/20": 402792,
    "6/8/20": 406543,
    "6/9/20": 411436
  ],
  "recovered": [
    "6/5/20": 2961441,
    "6/6/20": 3032630,
    "6/7/20": 3087135,
    "6/8/20": 3238065,
    "6/9/20": 3319551
  ]
}

edited Jun 10 '20 at 23:44

Craicerjack

6,203
2
31
39

answered Jun 10 '20 at 23:42

Nonik

645
4
11

1

I get the impression OP probably cannot alter the data format – Phil Jun 10 '20 at 23:44
2

That is not correct JSON syntax. You can't have an array with `key: 'value'` properties. That is what objects are for. – matthew-e-brown Jun 10 '20 at 23:45
Sorry I am just realizing that it is not a array lol. How should i go about getting out the dates individually? – whatland Jun 10 '20 at 23:46

Parsing a array from a JSON file

2 Answers2