CODEWITHSUNDEEP
javascript
Baruch Mashasha
Baruch Mashasha

Reputation: 979

Convert a string to array format java script

I hava a string like this "sum 123,645,423,123,432";

How can i convert this string to be like this:

{
  “sum”: [ 123,645,423,123,432 ]
}

I try it like this:

var arr = "sum 123,645,423,123,432";
var c = arr.split(',');
console.log(c);
VM3060:1 (5) ["sum 123", "645", "423", "123", "432"]

Thanks!

Upvotes: 0

Views: 104

Answers (4)

Ilijanovic
Ilijanovic

Reputation: 14924

First, i .split() the string by whitespace, that returns me an array like this ["sum" , "123,645,423,123,432"]

Instead of writing var name = str.split(" ")[0] and var arrString = str.split(" ")[1] i used an destructuring assignment

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment

Next step is to split the arrString up by , and then .map() over each element and convert it to an number with Number().

Finally i assign an object to result with a dynamic key [name] and set arr to the dynamic property.

var str = "sum 123,645,423,123,432";

var [name,arrString] = str.split(" ");
var arr = arrString.split(",").map(Number);

let result = {
   [name]: arr
}

console.log(result);

//reverse

var [keyname] = Object.keys(result);
var strngArr = arr.join(",");

var str = `${keyname} ${strngArr}`

console.log(str);

Upvotes: 5

Gabriel Rodríguez Flores
Gabriel Rodríguez Flores

Reputation: 348

This solution is equivalent to @Yohan Dahmani with the use of destructuring array for more legible code.

const str = "sum 123,645,423,123,432";

const [key,numbersStr] = str.split(' ');

const numbersArr = numbersStr.split(',').map(n => parseInt(n, 10));

const result = {[key]: numbersArr};

console.log(result);

Upvotes: 1

Yohan Dahmani
Yohan Dahmani

Reputation: 1928

const str = "sum 123,645,423,123,432";

const splittedString = str.split(" ");
const key = splittedString[0];
const values = splittedString[1].split(",").map(Number);

const myObject = {
  [key]: [...values]
};

console.log(myObject);

Upvotes: 2

A l w a y s S u n n y
A l w a y s S u n n y

Reputation: 38552

There are many ways to dot that,one way to do it using String.prototype.split()

let str = "sum 123,645,423,123,432";
let split_str = str.split(' ');
let expected = {};
expected[split_str[0]] = split_str[1].split(',');
console.log(expected);

Upvotes: 1

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