Format json array in required format

Question

this is the json format

[ { baseurl: 'http://localhost:5051/springbootdemo/getServerData',
    server: '1' },
  { baseurl: 'http://localhost:5052/springbootdemo/getServerData',
    server: '1' },
  { baseurl: 'http://localhost:5053/springbootdemo/getServerData',
    server: '2' },
  { baseurl: 'http://localhost:5054/springbootdemo/getServerData',
    server: '2' } ]

i want to re arrange it in this form

[
  {server:1 , urls: [
    "http://localhost:5051/springbootdemo/getServerData",
    "http://localhost:5052/springbootdemo/getServerData"
  ]},
  {server:2 , urls: [
    "http://localhost:5053/springbootdemo/getServerData",
    "http://localhost:5054/springbootdemo/getServerData"
  ]}`enter code here`
]

I want the re arrangement in above format.

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score 0 · Accepted Answer · answered Jul 08 '19 at 06:09

Firstly, that's not JSON - it's an ordinary array. Secondly, you can use reduce like so:

const arr = [{baseurl:'http://localhost:5051/springbootdemo/getServerData',server:'1'},{baseurl:'http://localhost:5052/springbootdemo/getServerData',server:'1'},{baseurl:'http://localhost:5053/springbootdemo/getServerData',server:'2'},{baseurl:'http://localhost:5054/springbootdemo/getServerData',server:'2'}];
const res = Object.values(arr.reduce((a, { baseurl, server }) => {
  (a[server] = a[server] || { server: +server, urls: [] }).urls.push(baseurl);
  return a;
}, {}));

console.log(res);

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Format json array in required format

1 Answers1