What is the best way to arrange the elements of an array based on a specified value?

Is there a way to develop a function that can organize an array of data based on the value of a specified field? Suppose the field consists of three numbers: 1, 2, 3. The idea is that upon providing a certain value to the function, it will rearrange the table accordingly. Here is an example array with console.log output:

0: {id: '1', name: 'Example', location: 'Example', key: 'Example', edit: '0'}
1: {id: '2', name: 'Example', location: 'Example', key: 'Example', edit: '0'}
2: {id: '2', name: 'Example', location: 'Example', key: 'Example', edit: '0'}
3: {id: '3', name: 'Example', location: 'Example', key: 'Example', edit: '0'}

For instance, if I wish to sort the array by an id of two, the sorted output would be as follows:

    0: {id: '2', name: 'Example', location: 'Example', key: 'Example', edit: '0'}
    1: {id: '2', name: 'Example', location: 'Example', key: 'Example', edit: '0'}
    2: {id: '1', name: 'Example', location: 'Example', key: 'Example', edit: '0'}
    3: {id: '3', name: 'Example', location: 'Example', key: 'Example', edit: '0'}

What steps should I take in order to accomplish this sorting task or where should I begin?

Answer №1

My interpretation is that you are looking to extract specific values first before arranging them in any order.

const data = [{
  id: '1',
  nazwa: 'Example',
  lokalizacja: 'Example',
  klucz: 'Example',
  edit: '0'
}, {
  id: '2',
  nazwa: 'Example',
  lokalizacja: 'Example',
  klucz: 'Example',
  edit: '0'
}, {
  id: '2',
  nazwa: 'Example',
  lokalizacja: 'Example',
  klucz: 'Example',
  edit: '0'
}, {
  id: '3',
  nazwa: 'Example',
  lokalizacja: 'Example',
  klucz: 'Example',
  edit: '0'
}]

const sorted = sortByKeyAndValue(data, 'id', '2')

console.log(sorted)

function sortByKeyAndValue(data, key, value) {
  return [...data].sort((a, b) => {
    if (a[key] === value) return -1
    if (b[key] === value) return 1
    return a[key].localeCompare(b[key])
  })
}

I opted for [...data] over data because Array.prorotype.sort alters the array directly instead of generating a new one.

Alternative version without creating a new array.

const data = [{
  id: '1',
  nazwa: 'Example',
  lokalizacja: 'Example',
  klucz: 'Example',
  edit: '0'
}, {
  id: '2',
  nazwa: 'Example',
  lokalizacja: 'Example',
  klucz: 'Example',
  edit: '0'
}, {
  id: '2',
  nazwa: 'Example',
  lokalizacja: 'Example',
  klucz: 'Example',
  edit: '0'
}, {
  id: '3',
  nazwa: 'Example',
  lokalizacja: 'Example',
  klucz: 'Example',
  edit: '0'
}]

sortByKeyAndValue(data, 'id', '2')

console.log(data)

function sortByKeyAndValue(data, key, value) {
  data.sort((a, b) => {
    if (a[key] === value) return -1
    if (b[key] === value) return 1
    return a[key].localeCompare(b[key])
  })
}

Answer №2

[The reduce() function applies a custom "reducer" callback to each array element in sequence, using the output of the previous calculation as input for the next iteration. The end result is a consolidated single value after applying the reducer to all elements of the array.][1] [1]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce

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