How to convert object array to comma separated string? [duplicate]

Question

Im trying to convert at object array with jQuery or javascript to a comma separated string, and no matter what I try I can´t get it right.

I have this from a select value.

ort = $('#ort').val();
ort=JSON.stringify(ort)

ort=["Varberg","Halmstad","Falkenberg"]

How can I convert it to a string looking like this?

ort=Varberg,Halmstad,Falkenberg

Any input appreciated, thanks.

use join() in example ["i", "am", "too", "lazy", "to", "search"].join(); will output "i,am,too,lazy,to,search" — Cid
– Cid, Commented Feb 2, 2019 at 18:04
you don't even need to explicitely join() you can simply convert it to a String. Like ""+["Varberg","Halmstad","Falkenberg"] or String(["Varberg","Halmstad","Falkenberg"]) or ["Varberg","Halmstad","Falkenberg"].toString() — Thomas
– Thomas, Commented Feb 2, 2019 at 18:09
That's a simple solution: let ortObjectToArray = JSON.parse(ort); let ortDecode = ortObjectToArray .join(','); — Maizied Hasan Majumder
– Maizied Hasan Majumder, Commented Sep 18, 2022 at 8:20

Code Maniac · Accepted Answer · 2019-02-02 18:02:43Z

10

You can use join

let arr = ["Varberg","Halmstad","Falkenberg"]

console.log(arr.join(','))

answered Feb 2, 2019 at 18:02

Code Maniac

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7 Comments

Claes Gustavsson Over a year ago

Thanks, but Im getting an error, TypeError: ort.join is not a function. (In 'ort.join(',')', 'ort.join' is undefined) ?

Cid Over a year ago

you can use .join(). Default value for separator is ,

Code Maniac Over a year ago

@ClaesGustavsson can you tell what console log of console.log(ort, typeof ort) shows ? without that it's possible to tell you exact reason.

Code Maniac Over a year ago

@Cid thanks for pointing out mate, but i prefer this for the shake of readability :)

Code Maniac Over a year ago

@ClaesGustavsson join is an array method. you need to parse string to array first you can use this JSON.parse(["Varberg","Halmstad","Falkenberg"]).join(',')

|

Amardeep Bhowmick · Accepted Answer · 2019-02-02 18:07:53Z

2

Use Array.prototype.join to to convert it into a comma separated string.

let str = ort=["Varberg","Halmstad","Falkenberg"].join(","); //"," not needed in join
console.log(str);

A simple toString also works in this case.

let str = ort=["Varberg","Halmstad","Falkenberg"].toString();
console.log(str);

edited Feb 2, 2019 at 18:07

answered Feb 2, 2019 at 18:02

Amardeep Bhowmick

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2 Comments

Cid Over a year ago

you can use .join(). Default value for separator is ,

Amardeep Bhowmick Over a year ago

@Cid yes right!

Tom O. · Accepted Answer · 2019-02-02 18:22:01Z

0

Another way to achieve this is by using Array.prototype.reduce:

console.log(["Varberg", "Halmstad", "Falkenberg"].reduce((s, el, idx, arr) => {
  s += el
  if (idx < arr.length - 1) {
    s += ','
  }
  return s;
}, ''));

answered Feb 2, 2019 at 18:22

Tom O.

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