How to remove double quotes from beginning and end of numbered value in a list

Question

I have data as follow:

let str = "1,2,3,4"

and, I want to transform it into

arr = [1,2,3,4]

https://stackoverflow.com/questions/4291447/convert-string-into-array-of-integers — epascarello, Jan 29 '20 at 14:27
Duplicate of https://stackoverflow.com/questions/13272406/convert-string-with-commas-to-array — Naren, Jan 29 '20 at 14:33

score 1 · Answer 1 · answered Jan 29 '20 at 14:24

1

You can use split() and Number()

let str = "1,2,3,4";

const output = str.split(',').map(Number);

console.log(output);

answered Jan 29 '20 at 14:24

Zohaib Ijaz

21,926
7
38
60

score 1 · Answer 2 · answered Jan 29 '20 at 14:25

1

let str = "1,2,3,4"
const nums = str.split(',').map( num => parseInt(num) );

console.log(nums)

You have to split by comma , then you can map through the array of strings and parseInt() them one by one

answered Jan 29 '20 at 14:25

Kevin.a

4,094
8
46
82

score 0 · Answer 3 · answered Jan 29 '20 at 14:27

actually what you can use is split + map in order to create an array with the values, because they would be strings, you can use + operator to cast it to a number.

like this:

let str = "1,2,3,4"
let newArray = str.split(',').map(n=> +n);
console.log(newArray);

How to remove double quotes from beginning and end of numbered value in a list

3 Answers3