i can't get array b of object a with reduce in js

Question

can you help me find the error?

const a = {
  dias:"valor",
  horas:"valor"
}

const b = campos.reduce((acc, el) => ([...acc, {
  title: el, field: el
}]), {})

desired result = [
 { title: 'dias', field: 'dias' },
 { title: 'horas', field: 'horas' },
]

be careful with the array name is a=campos

Cristian
– Cristian

2021-02-24 12:40:42 +00:00
Commented Feb 24, 2021 at 12:40 — Cristian
– Cristian, Commented Feb 24, 2021 at 12:40
You can edit your question to fix typos.

cbr
– cbr

2021-02-24 12:53:05 +00:00
Commented Feb 24, 2021 at 12:53 — cbr
– cbr, Commented Feb 24, 2021 at 12:53

cbr · Accepted Answer · 2021-02-24 12:52:30Z

1

You can use Object.keys().

const a = {
  dias: "valor",
  horas: "valor",
};

const b = Object.keys(a).map((key) => ({ title: key, field: key }));

console.log(b);

If you want the value of the property as the field instead, you can use Object.entries():

const a = {
  dias: "valor",
  horas: "valor",
};

const b = Object.entries(a).map(([key, value]) => ({
  title: key,
  field: value,
}));

console.log(b);

As a note, the [key, value] syntax is called array destructuring.

answered Feb 24, 2021 at 12:52

cbr

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