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

Similar questions

Guide to utilizing various Nodelists using the forEach function

While typing, React-hook-form is removing the input field when the mode property is enabled

Developing an npm module that is compatible with both web browsers and Node.js

In JavaScript, you can update the class named "active" to become the active attribute for a link

When executing `npm run start`, a blank page appears exclusively on the server

What is the best way to alternate $httpBackend when[method] declarations in unit tests to handle multiple requests?

Struggling to Confirm Inaccuracies in Material UI Forms

Python JSON object iterated through using a for loop

NodeJS parseStream, setting boundaries for chunk extraction from a stream

Get the json output and replace any null values with an empty string

Find the Time Difference in IST using JavaScript

The callback function is not being executed in the Ajax request

Tips for choosing the default tab on Bootstrap

Harvesting data from a simulated environment on the web

Learn how to extract data from the "this" object in JavaScript

Error 500 occurred when attempting to access an external PHP file

How to implement debouncing for an asynchronous custom validator in Vue.js using vuelidate?

What could be causing the bootstrap 4 col-md-3 block to shrink when using position fixed?

Tips for identifying a webpage and making class modifications based on it

Implement Next.js deployment on NGINX server with a 403 forbidden error