Spread to create new object for array of object [duplicate]

Question

I've tried to spread my array of object to create a new object but instead destroying the previous object

this is how I tried to spread my array

const currentArraySlug = [
  {
    slug: "jagung-com", content_viewed: [1, 2], all_viewed: false
  }
]

const newSlug = {
  slug: "New slug",
  content_viewed: [],
  all_viewed: false
}

const mergeData = Object.assign({}, newSlug, ...(currentArraySlug))

console.log(mergeData);

This is my Expected output

[
  {
    slug: "jagung-com",
    content_viewed: [1, 2],
    all_viewed: false
  },
  {
    slug: "New slug",
    content_viewed: [],
    all_viewed: false
  }
]

How can I deal with it, Thanks in advance

const mergeData = currentArraySlug.concat(newSlug) ??

CertainPerformance
– CertainPerformance

2021-04-30 02:10:10 +00:00
Commented Apr 30, 2021 at 2:10 — CertainPerformance
– CertainPerformance, Commented Apr 30, 2021 at 2:10

Yadab · Accepted Answer · 2021-04-30 02:17:08Z

1

Another way to merge data with spread operation is as below

const currentArraySlug = [
  {
    slug: "jagung-com", content_viewed: [1, 2], all_viewed: false
  }
]

const newSlug = {
  slug: "New slug",
  content_viewed: [],
  all_viewed: false
}

const mergeData = [newSlug, ...currentArraySlug];

console.log(mergeData);

answered Apr 30, 2021 at 2:17

Yadab

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