CODEWITHSUNDEEP
javascriptjsonnode.js
Arane
Arane

Reputation: 323

How do I get the specified values into respective position

I have a string of text, for example

"{"Date": 01/01/2019, "0": "John", "1": "Jack", "3": "Tom", "4": "Will", "5": "Joe"}"

Also, I have an entity

function demo(first, second) {
    this.first = first,
    this.second = second
}

Is it possible to transform the string of text into the entity? For example,

"Date" goes to first

01/01/2019 goes to second

"0" goes to first

"John" goes to second

Upvotes: 1

Views: 43

Answers (2)

Leigh Cheri
Leigh Cheri

Reputation: 125

The Object.keys(json) will do the trick in combination with the map function:

const str = '{"Date": "01 / 01 / 2019", "0": "John", "1": "Jack", "3": "Tom", "4": "Will", "5": "Joe"}';
const json = JSON.parse(str);

function demo(first, second) {
    console.log(first, second);
    this.first = first,
    this.second = second
}

Object.keys(json).map(key => {
    demo(key, json[key]);
});

Upvotes: 0

Orelsanpls
Orelsanpls

Reputation: 23545

You can create your own class and then create objects iterating on your json object

class CustomObject {
   constructor(x, y) {
     this.first = x;
     
     this.second = y;
   }
}

// your initial data as a json into a string
const str = '{"Date": "01/01/2019", "0": "John", "1": "Jack", "3": "Tom", "4": "Will", "5": "Joe"}';

// transform your string into a json object
const json = JSON.parse(str);

// Build the custom objects, using the data inside of the json object
// The notation [x, y] is called -> destructuring
const objs = Object.entries(json).map(([x, y]) => new CustomObject(x, y));

// Now that we have the objects, display the values stored inside
// each one of them, to show they are correctly settled
objs.forEach(x => console.log(x.first, x.second));

Upvotes: 3

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