How to convert string to JSON in node

Question

How do we convert the following parameter string to JSON using node.

"token=1234&team_id=TADAS&team_domain=testddomain&channel_id=AVC"

The expected output is { "token":1234, "team_id":"TADAS","team_domain":"testddomain","channel_id":"AVC"}

Tried JSON.parse, not working - Uncaught SyntaxError: Unexpected token o in JSON at position 1

This is likely a result of invalid JSON as `JSON.parse` is how you would achieve this in Node. — Shaun E. Tobias, Mar 09 '20 at 10:20
https://stackoverflow.com/questions/8590042/parsing-query-string-in-node-js — Roberto Zvjerković, Mar 09 '20 at 10:21
your question may be already answered here : [here](https://stackoverflow.com/questions/6912584/how-to-get-get-query-string-variables-in-express-js-on-node-js) — Iman Emadi, Mar 09 '20 at 10:22
You could use [Node's `URL` module](https://nodejs.org/api/url.html) — Seblor, Mar 09 '20 at 10:23

score 7 · Answer 1 · answered Mar 09 '20 at 10:32

Since no answers here are using native, URL-oriented solutions, here's my version.

You can use Node's URL module (which also works in the browser) like so :

const queryString = "token=1234&team_id=TADAS&team_domain=testddomain&channel_id=AVC";
const params = new URLSearchParams(queryString);

const paramObject = Object.fromEntries(params.entries());
    
console.log(paramObject);

Also, instead of building the object, you can simply use the get function like this :

const token = params.get("token") // Returns "1234"

score 2 · Answer 2 · answered Mar 09 '20 at 10:21

2

You can use the query-string package.

Usage:

const qs = require('query-string');

const query = "token=1234&team_id=TADAS&team_domain=testddomain&channel_id=AVC";

const parsedObject = qs.parse(query);
console.log(parsedObject);

answered Mar 09 '20 at 10:21

huytc

1,074
7
20

score 2 · Answer 3 · answered Mar 09 '20 at 10:22

2

I think that query-string dependency is just what you need :) https://www.npmjs.com/package/query-string

The parse function takes a query string as parameter and returns a clean JS object.

answered Mar 09 '20 at 10:22

KValium

111
1
11

You should give a code example instead of just a link to the package. – Jeremy Thille Mar 09 '20 at 10:31

score 2 · Answer 4 · edited Mar 09 '20 at 10:31

2

You can try using split and reduce.

const query = "token=1234&team_id=TADAS&team_domain=testddomain&channel_id=AVC"

const json = query.split('&').reduce((acc, i) => {
  const [key, value] = i.split('=')
  acc[key] = value

  return acc
}, {})

console.log(json)

edited Mar 09 '20 at 10:31

Jeremy Thille

26,047
12
43
63

answered Mar 09 '20 at 10:25

lucas

1,105
8
14

score 1 · Accepted Answer · answered Mar 09 '20 at 10:22

You can use querystring library of node js

var qs = require("querystring")
var json = qs.parse("token=1234&team_id=TADAS&team_domain=testddomain&channel_id=AVC")

then the output is like this

{ "token":1234, "team_id":"TADAS","team_domain":"testddomain","channel_id":"AVC"}

You can refer this link https://nodejs.org/api/querystring.html#querystring_querystring_parse_str_sep_eq_options

How to convert string to JSON in node

5 Answers5