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const arr = [ {"2021-08-26": { selected: true }}, {"2021-08-27": { selected: true }}, {"2021-08-28": { selected: true }} ];

// const expected = {
//   "2021-08-26": {
//     selected: true
//   },
//   "2021-08-27": {
//     selected: true
//   },
//   "2021-08-28": {
//     selected: true
//   }
// }


console.log(Object.fromEntries(arr))

I have such an array. What's the best way to convert it into expected format? Date should be used as a key

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  • 1
    You'll have to write code, which you do not appear to have even attempted to do. Commented Aug 31, 2021 at 18:25

1 Answer 1

Reset to default
3

Uses one Array.reduce and (Object.assign or ... spread operator) if don't consider how to process duplicate date.

const arr = [ {"2021-08-26": { selected: true }}, {"2021-08-27": { selected: true }}, {"2021-08-28": { selected: true }} ];

function convert(items) {
  return items.reduce((pre, cur) => ({...pre, ...cur}), {})
  // return items.reduce((pre, cur) => Object.assign(pre, cur), {})
}
console.log(convert(arr))

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