fetch() POST request

fetch('https://api-to-call.com/endpoint', {
  ////this second argument containing method and body determines that this request is a POST request and what information will be sent to the API.
  method: 'POST',
  body: JSON.stringify({id: '200'})
}).then(response => {
  if (response.ok){
    return response.json();
  }
  throw new Error('Request failed!');
}, networkError => {
  console.log(networkError.message);
}).then(jsonResponse => {
  return jsonResponse
});