Javascript - Merge indexes of array into one object of array

Question

INPUT

[0]: [{}, {}],
[1]: [{}, {}],
[2]: [{}]

I have index 0, 1 and 2 with array of objects. Now I need to merge all these index values into a single array of object

Expected O/P

[{}, {}, {}, {}, {}]

Duplicate of Converting an array of single object arrays, to an array of objects. Familiarize yourself with how to access and process nested objects, arrays or JSON and use the available static and instance methods of Array. — Sebastian Simon
– Sebastian Simon, Commented Sep 9, 2021 at 5:49

Vineet Desai · Accepted Answer · 2021-09-09 04:17:45Z

1

let arr = [
  [{
    key1: "value1"
  }, {
    key2: "value2"
  }],
  [{
    key3: "value3"
  }, {
    key4: "value4"
  }],
  [{
    key5: "value5"
  }]
];

arr = arr.flat();

console.log(arr);

answered Sep 9, 2021 at 4:17

Vineet Desai

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Comments

Harsh Patel · Accepted Answer · 2021-09-09 04:14:01Z

-1

Here's just one solution like you need:

let a = {
  0: [{}, {}],
  1: [{}, {}],
  2: [{}]
}

let values = []
for (var x in a)
{
    a[x].map(p => values.push(p))
}
console.log(values)  //[{}, {}, {}, {}, {}]

Make sure to handle each case, validate if it's an array then loop over it.

answered Sep 9, 2021 at 4:14

Harsh Patel

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Comments

Yosvel Quintero · Accepted Answer · 2021-09-09 04:27:46Z

-1

You can do a one liner using the reduce:

const obj = {
  0: [{}, {}],
  1: [{}, {}],
  2: [{}]
}

const arr = Object.values(obj).reduce((acc, curr) => ([...acc, ...curr]), [])
console.log(arr)

edited Sep 9, 2021 at 4:27

Yosvel Quintero

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answered Sep 9, 2021 at 4:19

Karma Blackshaw

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