How to split the array of object to create a new object

Question

I have an array with multiple objects.So how to make a new object by splitting the objects.

Here is how i am doing manually. How can I achieve it dynamically.

var a ='["{\\"Transfer_Notes__c\\":{\\"filterType\\":\\"text\\",\\"type\\":\\"contains\\",\\"filter\\":\\"abc\\"}}","{\\"IQ_Score__c\\":{\\"filterType\\":\\"number\\",\\"type\\":\\"equals\\",\\"filter\\":null,\\"filterTo\\":null}}"]';
var c = {};
c= JSON.parse(a);
const obj = Object.assign({}, JSON.parse(c[0]),JSON.parse(c[1]));


console.log(obj)

I tried several ways. Please help!

You have double-encoded JSON. Your parsed array contains JSON strings, not objects — Patrick Roberts
– Patrick Roberts, Commented Aug 11, 2020 at 15:06
Try using a loop (for const item of c) { ... // Your code here} — Ruan Mendes
– Ruan Mendes, Commented Aug 11, 2020 at 15:06
@PatrickRoberts That's why you see multiple calls to JSON.parse() What a I missing, how does your comment have two upvotes? Did you run the code? — Ruan Mendes
– Ruan Mendes, Commented Aug 11, 2020 at 15:07
@Liam Sometimes you don't have control over what you're given — Ruan Mendes
– Ruan Mendes, Commented Aug 11, 2020 at 15:08

Darth · Accepted Answer · 2020-08-11 15:07:32Z

4

var a ='["{\\"Transfer_Notes__c\\":{\\"filterType\\":\\"text\\",\\"type\\":\\"contains\\",\\"filter\\":\\"abc\\"}}","{\\"IQ_Score__c\\":{\\"filterType\\":\\"number\\",\\"type\\":\\"equals\\",\\"filter\\":null,\\"filterTo\\":null}}"]';
var c = JSON.parse(a);
const obj = c.reduce((obj, c) => Object.assign(obj, JSON.parse(c)), {});

console.log(obj)

answered Aug 11, 2020 at 15:07

Darth

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Comments

Nick Parsons · Accepted Answer · 2020-08-11 15:20:59Z

You could use a reviver function with JSON.parse() to specify that the array values should also be parsed. Then you can spread the parsed objects from the array into a resulting object using Object.assign():

var a ='["{\\"Transfer_Notes__c\\":{\\"filterType\\":\\"text\\",\\"type\\":\\"contains\\",\\"filter\\":\\"abc\\"}}","{\\"IQ_Score__c\\":{\\"filterType\\":\\"number\\",\\"type\\":\\"equals\\",\\"filter\\":null,\\"filterTo\\":null}}"]';

const parsed = JSON.parse(a, (key, val) => key ? JSON.parse(val) : val);
const c = Object.assign({}, ...parsed);
console.log(c);

SFKID · Accepted Answer · 2020-08-11 15:18:12Z

-1

var a ='["{\\"Transfer_Notes__c\\":{\\"filterType\\":\\"text\\",\\"type\\":\\"contains\\",\\"filter\\":\\"abc\\"}}","{\\"IQ_Score__c\\":{\\"filterType\\":\\"number\\",\\"type\\":\\"equals\\",\\"filter\\":null,\\"filterTo\\":null}}"]';
var c = {};
c= JSON.parse(a);
const A ={};
var obj = {};
for(var i=0;i<c.length;i++){
  obj = Object.assign(A, JSON.parse(c[i]),);
}



console.log(obj)

Please suggest if there is any alternative way; Suggest me if i am doing wrong

edited Aug 11, 2020 at 15:18

answered Aug 11, 2020 at 15:07

SFKID

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5 Comments

Darth Over a year ago

Almost ideal, but you have logic mistake - you assign each string for new empty object, and final result contains only last string. Fix that - obj = Object.assign(obj, JSON.parse(c[i])); and your code will work

Ruan Mendes Over a year ago

You can see from the output that you're only getting a single property, that's because you need to write to the same object when calling Object.assign. Right now, you're overwriting the object with every write

Ruan Mendes Over a year ago

@SFKID This should be part of your question, not an answer. Please do not post an answer when you are actually asking a question, unless you know for sure that your answer is correct. stackoverflow.blog/2011/07/01/…

SFKID Over a year ago

@JuanMendes Check it now.

Ruan Mendes Over a year ago

@SFKID Please don't ignore my comment and then ask me for my help

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