JavaScript - Convert Array of Arrays into Array of Objects with Prefilled Values

Javascript - convert array of arrays into array of objects with prefilled values

You can simply use Array.prototype.map to project an array into another one by applying a projection function:

var arrs = [
    [1, 2],
    [3, 4],
    [5, 6],
    [7, 8]
];

var objs = arrs.map(x => ({ 
  lat: x[0], 
  lng: x[1] 
}));

/* or, using the older "function" syntax:

var objs = arrs.map(function(x) { 
  return {
    lat: x[0], 
    lng: x[1] 
  };
);

*/

console.log(objs);

Converting an array of arrays into an array of objects

Use Array#map.

let array = [
[144, 'test@email.com', '7357'],
[145, 'test2@email.com', '7358'],
[146, 'test3@email.com', '7359'],
];

let result = array.map(([employeeId, WorkEmail, ClubNumber]) => ({employeeId, WorkEmail, ClubNumber}))

console.log(result);

How to convert array of array to array of objects in react

Using For Loop

const x = [
 ['Lettuce', 60],
 ['Apple', 80]
]

let arrayOfObjects = []
for(let [name, price] of x){
    arrayOfObjects.push({name, price})
}

Using map

const x = [
 ['Lettuce', 60],
 ['Apple', 80]
]

let arrayOfObjects = x.map(([name, price]) => ({name,price}))

Run through an array and split values

You can use try using Array.prototype.map():

The map() method creates a new array populated with the results of calling a provided function on every element in the calling array.

var data = [[5.76516834507, 50.8474898368], [5.76115833641, 50.8453698247]];var res = data.map(i => ({latitude: i[0], longitute: i[1]}));console.log(res);

How to convert a JavaScript array to an object?

You can use Array.map to build desired format, here i am Destructuring element from each array as date, name, and address and than returning an object with these key/value pair

let data =  [["2019","abc","xyz"],["2014","DEF","PQR"]]
let op = data.map(([date, name, address]) => ({date, name, address}))
console.log(op)

Assign Keys when converting array to json - Node JS

Use map, then destruct the array and return an object.

const arr = [
  [
    'James',
    23,
    'male'
  ],
  [
    'Britney',
    45,
    'female'
  ]
]

const res = arr.map(([name, age, gender]) => ({
    name,
    age,
    gender
}))

console.log(res);

Convert a 2D array with first rows a headers to object JavaScript

Destructure the array, and take the keys (1st item), and the values (the rest). Map the values array, and then map each sub-array of values, take the respective key by the value, and return a pair of [key, value]. Convert the array pairs to an object with Object.fromEntries():

const fn = ([keys, ...values]) => 
  values.map(vs => Object.fromEntries(vs.map((v, i) => [keys[i], v])))

const array = [[ 'combi', 'DQ#', 'sd', 'Level 3', 'Level 6', 'Level 7' ], [ 'DQn DQDC Simple','DQn',  'DQDC', 'Simple', 'Simple_A7',  0.262],[ 'DQn DQDC Simple1','DQn',  'DQDC', 'Simple1', 'Simple_A7',  0.264]]

const result = fn(array)

console.log(result)

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