How can I turn an array object into an object?

Question

I want to put an array object called hello into a constant called answer. At this time, I want to change the key value of the answer to the value key of hello and the value of the answer to the label value of hello.

how can i do that? i was thinking object entries but i couldn't do that.... is it possible??

this is my code

const hello = [
{ label: 'one', value: 'Tangerinefeed' },
{ label: 'two', value: 'dryexamfeed' },
{ label: 'three', value: 'wetfeed' },
{ label: 'forth', value: 'sawdust' },
{ label: 'five', value: 'etc' },
] ;

expected answer

const answer = {Tangerinefeed: 'one', dryexamfeed: 'two', wetfeed: 'three', sawdust: 'forth', etc: 'five'}

What did you try? Obviously, you iterate the current array and add properties to an object while iterating. — jfriend00
– jfriend00, Commented Jun 21, 2022 at 1:42

Nick Vu · Accepted Answer · 2022-06-21 01:42:16Z

3

You can use reduce to achieve it

const hello = [
{ label: 'one', value: 'Tangerinefeed' },
{ label: 'two', value: 'dryexamfeed' },
{ label: 'three', value: 'wetfeed' },
{ label: 'forth', value: 'sawdust' },
{ label: 'five', value: 'etc' },
] ;

const finalResult = hello.reduce((result, item) => {
  result[item.value] = item.label
  return result
}, {})

console.log(finalResult)

answered Jun 21, 2022 at 1:42

Nick Vu

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Comments

baloglu · Accepted Answer · 2022-06-21 01:42:52Z

1

You can do it with forEach method.

const hello = [
{ label: 'one', value: 'Tangerinefeed' },
{ label: 'two', value: 'dryexamfeed' },
{ label: 'three', value: 'wetfeed' },
{ label: 'forth', value: 'sawdust' },
{ label: 'five', value: 'etc' },
] ;

const answer = {};

hello.forEach(a=>{ answer[a.value]=a.label})

console.log(answer);

answered Jun 21, 2022 at 1:42

baloglu

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Comments

wakakak · Accepted Answer · 2022-06-21 01:47:43Z

1

i would use reduce.. ex:

const answer = hello.reduce((prev, cur) => {
  prev[cur.value] = cur.label;
  return prev;
}, {});

answered Jun 21, 2022 at 1:47

wakakak

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Comments

hotali7 · Accepted Answer · 2022-06-21 01:53:31Z

1

Have you ever used a map? Hope it helps you. Thank you.

const hello = [
    { label: 'one', value: 'Tangerinefeed' },
    { label: 'two', value: 'dryexamfeed' },
    { label: 'three', value: 'wetfeed' },
    { label: 'forth', value: 'sawdust' },
    { label: 'five', value: 'etc' },
]

let answer = {};
hello.map(h => {
    answer[h.value] = h.label;
    return true;
});
console.log(answer);

answered Jun 21, 2022 at 1:53

hotali7

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