How to make POST requests in JS

example.js

let data = new FormData();
data.append('note', 'new note value yo!');

let youth_visit_id = 1;
let url = `/api/visit/${youth_visit_id}/edit-note/`;

fetch(url, {
  method: 'POST',
  body: data
}).then(response => {
    console.log('response');
    console.log(response);
    console.log(`Status code: ${response.status}`)
}).catch(ex => {
    console.log('exception');
    console.log(ex);
    console.log(`Status code: ${response.status}`)
})