convert javascipt array to an object

Question

in javascript , how can I convert a nested array to an object , for example , I have this array :

let Input_Array=[[key1,value1],[key2,value2],[key3,value3]]

//The output Object , should be like this : 

let Output_Object ={
    key1 : value1,
    key2 : value2,
    key3 : value3,
}

I guess that we will not have problem in values because we can just copy them by index by input_Array[i][1] . The issue is in keys , because if we have a key===string , must follow the pattern of an object variable .

if you any idea how to trait it , or is there a library for doing this it's better .

Answer 1

you should use Bracket notation

maybe this would help

const array = [["name", "john"],["age", 22]];
let object = {};

array.forEach((value) => {
  object[value[0]] = value[1];
})

console.log(object)

Answer 2

You can use reduce method to turn convert your array to the wanted object:

const Input_Array = [['key1','value1'],['key2','value2'],['key3','value3']];


const result = Input_Array.reduce((a,c) => ({...a, [c[0]]: c[1] }), {});

console.log(result);

Answer 3

Initialize a new object, then iterate over the input array and insert the values into the object explicitly.

var Input_Array=[["key1","value1"],["key2",2],[3,"value3"]];

var Output_Object = {};

for (var i = 0; i < Input_Array.length; i = i + 1) {
  Output_Object[Input_Array[i][0]] = Input_Array[i][1];
}

console.log(Output_Object);

Answer 4

Use Object.fromEntries() to turn a 2d array into an object.

let Input_Array = [
  ['key1', 'value1'],
  ['key2', 'value2'],
  ['key3', 'value3']
]

let Output_Object = Object.fromEntries(Input_Array);

console.log(Output_Object);

Answer 5

const Input_Array = [["key1", "value1"],["key2", "value2"],["key3", "value3"]];
const Output_Object = Input_Array.map((elem) => ({[elem[0]]: elem[1]}));
console.log(Output_Object);