Approach for fetching these JSON records

Question

Approach for fetching these JSON records

I am currently exploring ways to retrieve all entries within a JSON payload using JavaScript. Specifically, I am interested in finding the best method to extract all instances of "o4" in a specific order (-159, -257). How can this be achieved?

{
  data: {
    '1613152800': {
      i0: -264,
      i1: 297,
      i2: -260,
      i3: 270,
      i4: -159,
      i5: 0,
      i6: -7,
      i7: 145
    },
    '1613153400': {
      i0: 261,
      i1: -239,
      i2: 125,
      i3: -214,
      i4: -257,
      i5: 3,
      i6: -237,
      i7: -128
    }
  }
}

While this example showcases two primary entries ('1613152800' and '1613153400'), it is essential to note that there might be numerous such entries present.

Moreover, it's important to mention that I won't have prior knowledge of the main entry ids, meaning that '1613152800' and '1613153400' will always remain unidentified. Therefore, I cannot rely solely on

var json = JSON.parse(data);
console.log(json.data['1613152800'].i4);

as an approach.

Your insights would be greatly appreciated. Thank you!

javascript json

Answer 1

Answer №1

If you want to extract specific values from an object, you can use a combination of Object.values and map:

const obj={ data: { '1613152800': { i0: -264, i1: 297, i2: -260, i3: 270, i4: -159, i5: 0, i6: -7, i7: 145 }, '1613153400': { i0: 261, i1: -239, i2: 125, i3: -214, i4: -257, i5: 3, i6: -237, i7: -128 } }}

const getEntries=(obj, key)=> Object.values(obj.data).map(({[key]:v})=>v);

console.log(getEntries(obj,'i4'));

Answer 2

If you want to extract specific values from an object, you can use a combination of Object.values and map:

const obj={ data: { '1613152800': { i0: -264, i1: 297, i2: -260, i3: 270, i4: -159, i5: 0, i6: -7, i7: 145 }, '1613153400': { i0: 261, i1: -239, i2: 125, i3: -214, i4: -257, i5: 3, i6: -237, i7: -128 } }}

const getEntries=(obj, key)=> Object.values(obj.data).map(({[key]:v})=>v);

console.log(getEntries(obj,'i4'));

Answer 3

Answer №2

If you want to iterate through the elements within your data object, you can accomplish that by following these steps:

var jsonData = JSON.parse(data);
var keys = [];
for(var key in jsonData.data) {
  keys.push(key);
}

Once you have an array of the keys, you can access the objects using their respective indices like this:

console.log(keys[0].i4);

Answer 4

If you want to iterate through the elements within your data object, you can accomplish that by following these steps:

var jsonData = JSON.parse(data);
var keys = [];
for(var key in jsonData.data) {
  keys.push(key);
}

Once you have an array of the keys, you can access the objects using their respective indices like this:

console.log(keys[0].i4);

Approach for fetching these JSON records

Answer №1

Answer №2

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