How to get key value in this case {Java Script}

Question

Hi so what iam trying to achieve is basically is simple.Iam try to get only the object key's value from the given array so this is my example array

[{'aaa': '11','text':'hello'},{'aaa': '12','text':'bye'}] iam expecting a output of something like this [11,12]

where iam getting the data of the aaa key only

There is no concept of "the first key` - it could change based on javascript implementations — Jamiec, Jun 24 '22 at 08:14
Does this answer your question? [How can I access and process nested objects, arrays or JSON?](https://stackoverflow.com/questions/11922383/how-can-i-access-and-process-nested-objects-arrays-or-json) — Don't Panic, Jun 24 '22 at 08:18

Jamiec · Accepted Answer · 2022-06-24T08:26:52.400

This will do what you want, but the order could well change between different javascript implementations

const input = [{'aaa': '11','text':'hello'},{'bbb': '12','text':'bye'}]

const output = input.map(x => Object.values(x)[0]);

console.log(output)

I note you updated the quesrtion to have both the same first key - if you're looking for aaa value from all elements this is much simpler

const input = [{'aaa': '11','text':'hello'},{'aaa': '12','text':'bye'}]

const output = input.map(x => x.aaa);

console.log(output)

score 1 · Answer 2 · answered Jun 24 '22 at 08:18

1

const o = [{'aaa': '11','text':'hello'},{'aaa': '12','text':'bye'}]

const filtered = o.map(i => +i.aaa)
console.log(filtered)

answered Jun 24 '22 at 08:18

vdegenne

thanks this solved my questions.however iam open to any other better ways of it doing it too – Jun 24 '22 at 08:21
what do you mean with "other better ways" ?? – Jun 24 '22 at 08:22
anything faster in terms of performance – Jun 24 '22 at 09:33

score -1 · Answer 3 · answered Jun 24 '22 at 08:17

-1

The JSON path if you convert this into a JavaScript Object Notation format (as JSON).

0.aaa = 11

1.bbb = 12

answered Jun 24 '22 at 08:17

Sowmo0509

3 Answers3