Fetch: POST json data

Question

I\'m trying to POST a JSON object using fetch.

From what I can understand, I need to attach a stringified object to the body of the request, e.g.:

Answer 1

If your JSON payload contains arrays and nested objects, I would use URLSearchParams and jQuery's param() method.

fetch('/somewhere', {
  method: 'POST',
  body: new URLSearchParams($.param(payload))
})

To your server, this will look like a standard HTML

being POSTed.