JAVASCRIPT remove parent key from array

Question

I have an array and i need to remove the top most 0 key, and leave the array with the following structure:

[array(24)]

0:{...}

1:{...}

2:{...}

3:{...}

until last key (24)

Right now this is how the array is:

I have tried many methods like assign, flat, array_shift, Object.keys(), Object.values(), and others without any luck.

what about [`Array#shift`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift)? — Nina Scholz, Feb 27 '21 at 08:56
Please visit [help], take [tour] to see what and [ask]. Do some research, search for related topics on SO; if you get stuck, post a [mcve] of your attempt, noting input and expected output, preferably in a [Stacksnippet](https://blog.stackoverflow.com/2014/09/introducing-runnable-javascript-css-and-html-code-snippets/) — mplungjan, Feb 27 '21 at 09:13

Tamir Nakar · Accepted Answer · 2021-02-27T09:25:44.227

0

There is a designated function for it. Try myArray.shift()

const myArray = [{a:1}, {b:2}, {c:3}]
const firstElement = myArray.shift();
console.log(`first element: ${JSON.stringify(firstElement)}`)
console.log(`modified Array: ${JSON.stringify(myArray)}`)

edited Feb 27 '21 at 09:25

answered Feb 27 '21 at 09:10

Tamir Nakar

933
1
10
17

It gives me undefined when i log the resulting array. – André Castro Feb 27 '21 at 09:11
now it is working but the array remains with the parent key 0, it didn´t remove that key. – André Castro Feb 27 '21 at 09:13
The shift method removes and returnes the first element of your array (all elements are beeing shifted to the left). So you just need to do .shift() and then examine the modifed array. – Tamir Nakar Feb 27 '21 at 09:18
I'll edit my answer with an example so you can run it. – Tamir Nakar Feb 27 '21 at 09:20

score 0 · Answer 2 · answered Feb 27 '21 at 09:12

You can use Object.values

myarray = {
    Array24 :
    {
        '0': { category :'saude'},
        '1': {price: '40'},
        '2': { category :'saude'},
        '3': {price: '40'},
        '4': { category :'saude'},
        '5': {price: '40'},
    }
}

console.log(Object.values(myarray));

You will get

  {
    '0': { category: 'saude' },
    '1': { price: '40' },
    '2': { category: 'saude' },
    '3': { price: '40' },
    '4': { category: 'saude' },
    '5': { price: '40' }
  }
]

score 0 · Answer 3 · answered Feb 27 '21 at 09:13

0

Try using shift method, like:

const arr = [1, 2, 3, 4, 5];
arr.shift();
console.log(arr);

answered Feb 27 '21 at 09:13

AdriSolid

2,570
1
7
17

JAVASCRIPT remove parent key from array

3 Answers3