How to represent array with nested arrays as an object

Question

This is my code

let array = [
  [
    ['firstName', 'Mary'],
    ['lastName', 'Jenkins'],
    ['age', 36],
    ['gender', 'female'],
  ],
  [
    ['lastName', 'Kim'],
    ['age', 40],
    ['gender', 'female'],
  ],  [
    ['firstName', 'Joe'],
    ['age', 42],
    ['gender', 'male'],
  ],
]

array.map(function (el) {
   return Object.assign({}, el)
})

However this is how it appears in the console

I've tried array.flat() but did not work as intended

I want the result to look something like this

[[{firstName : 'Mary'}.{lastName : 'jenkins'},..],...]

Answer 1

Do you want a list of objects, or a list of a list of key-value (pair) objects?

List of objects

 let array = [ [ ['firstName', 'Mary'], ['lastName', 'Jenkins'], ['age', 36], ['gender', 'female'], ], [ ['lastName', 'Kim'], ['age', 40], ['gender', 'female'], ], [ ['firstName', 'Joe'], ['age', 42], ['gender', 'male'], ], ] const listOfObjects = array.map(Object.fromEntries); console.log(listOfObjects.map(JSON.stringify).join('\n'));

 .as-console-wrapper { top: 0; max-height: 100%;important; }

List of list of object properties

 let array = [ [ ['firstName', 'Mary'], ['lastName', 'Jenkins'], ['age', 36], ['gender', 'female'], ], [ ['lastName', 'Kim'], ['age', 40], ['gender', 'female'], ], [ ['firstName', 'Joe'], ['age', 42], ['gender', 'male'], ], ] const listOfListOfPairs = array.map(items => items.map(item => Object.fromEntries([item]))); console.log(listOfListOfPairs.map(JSON.stringify).join('\n'));

 .as-console-wrapper { top: 0; max-height: 100%;important; }

Answer 2

you can use Object.fromEntries .

in your case something like this would work:

 let array = [ [ ['firstName', 'Mary'], ['lastName', 'Jenkins'], ['age', 36], ['gender', 'female'], ], [ ['lastName', 'Kim'], ['age', 40], ['gender', 'female'], ], [ ['firstName', 'Joe'], ['age', 42], ['gender', 'male'], ], ] const asObjects = array.map((entries) => Object.fromEntries(entries)) console.log(asObjects)