Convert array of strings to object with params and values

Question

I have next array with strings:

['val1=123','val2=456']

How I can split it to object with params and values?

{
  val1: 123,
  val2: 456,
}

There are dozens of duplicates. What are you struggling with? This is pretty similar: stackoverflow.com/questions/42974735/… — user15388024
– user15388024, Commented May 28, 2021 at 9:50
@Ted save that output to a variable res2 or similar. Then you can use Object.fromEntries(res2) — evolutionxbox
– evolutionxbox, Commented May 28, 2021 at 9:51
const res = ['val1=123','val2=456']; res.map(x => x.split('=')); result: [ [ "val1", "123" ], [ "vall2", "456" ], — Ted
– Ted, Commented May 28, 2021 at 9:52

lpf · Accepted Answer · 2021-05-28 17:11:19Z

3

const recordStrings = ['val1=123', 'val2=456']
const record = Object.fromEntries(
  recordStrings.map(str => str.split('='))
)

console.log(record)

Explanation:

recordStrings.map(str => str.split('=')) returns [[val1, 123], [val2, 456]].

Object.fromEntries(entries) creates an object from an array containing [key, value] tuples.

edited May 28, 2021 at 17:11

answered May 28, 2021 at 9:54

lpf

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1 Comment

Rajdeep D Over a year ago

Object.fromEntries that's amazing

Mamunur Rashid · Accepted Answer · 2021-05-28 11:01:34Z

2

You can try with reduce method, it's really helpful to convert an array to any others data type like an object, string, number.

const arr = ['val1=123','val2=456'];

const items = arr.reduce((total, item) => {
  const [key, value] = item.split('=');
  if (key) {
    total[key] = value
  }
  return total;
}, {})

console.log(items);

answered May 28, 2021 at 11:01

Mamunur Rashid

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1 Comment

lpf Over a year ago

Array#reduce is very powerful, which is why it is poor at communicating intent. I would recommend a combination of Array#map and Object.fromEntries for clarity.

user15388024 · Accepted Answer · 2021-05-28 09:54:37Z

1

Split the strings in the array and convert the array to an object:

const res = ['val1=123','val2=456'];
const result = Object.fromEntries(res.map(x => {
    const [l, r] = x.split('=');
    return [l, +r];
}));
console.log(result);

answered May 28, 2021 at 9:54

user15388024

1 Comment

Rajdeep D Over a year ago

Object.fromEntries that's amazing

AbsoluteBeginner · Accepted Answer · 2021-05-28 09:57:04Z

1

let obj = {};
let arr = ['val1=123', 'val2=456'];

arr.forEach(i => {
  let x = i.split('=');
  obj[x[0]] = parseInt(x[1]);
});

console.log(obj);

edited May 28, 2021 at 9:57

AbsoluteBeginner

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answered May 28, 2021 at 9:52

Rajdeep D

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Comments

score 1 · Accepted Answer · 2021-05-28 09:57:36Z

1

let arr = ['val1=123', 'val2=456']
let object = {}

for (let i = 0; i < arr.length; i++) {
  var split = arr[i].split("=")
  object[split[0]] = split[1]
}

console.log(object); // { val1: '123', val2: '456' }

edited May 28, 2021 at 9:57

answered May 28, 2021 at 9:51

user15253655

Comments

Алексей · Accepted Answer · 2021-05-28 10:02:06Z

0

let arr = ['val1=123','val2=456'];
    arr.forEach(str => {
        let arrStr = str.split('=');
        eval(arrStr[0] + '= ' + arrStr[1] + ';');
    })
    console.log(val1, val2);

OR

let arr = ['val1=123','val2=456'];
    arr.forEach(str => {
        let arrStr = str.split('=');
        window[arrStr[0]] = arrStr[1];
    })
    console.log(val1, val2);

edited May 28, 2021 at 10:02

answered May 28, 2021 at 9:56

Алексей

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