How to serialize nested object?

Question

JavaScript

I want to translate the nested object into a string to send to the backend.
https://jsfiddle.net/rwcjapft/
There is such an object

let obj = {
  page: "1",
  search: {title: "gfsg", without_complex: false},
  size: "10",
  items: 323
}

I need to get the output

page=1&search[title]=gfsg&search[without_complex]=false&size=10&items=323

how to get this output?

Answer 1

const serialize = (obj, path) =>
  Object.entries(obj).map(([ k, v ]) => {
    const p = path ? `${path}[${k}]` : k;
    return v instanceof Object ? serialize(v, p) : `${p}=${v}`;
  }).join('&');

Answer 2

There is a ready-made solution for this: https://github.com/ljharb/qs